Home / 28,082.04-38,694.15-19,113.72

Finding the Fourth Proportional to 28,082.04, 38,694.15 and 19,113.72

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Solution

The fourth proportional to 28,082.04, 38,694.15 and 19,113.72 is: 26,336.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.04 : 38,694.15 = 19,113.72 : x
  2. Step 2: Convert to fraction form
    28,082.04/38,694.15 = 19,113.72/x
  3. Step 3: Cross multiply
    28,082.04x = 38,694.15 × 19,113.72
  4. Step 4: Simplify right side
    28,082.04x = 739,589,148.74
  5. Step 5: Solve for x
    x = 739,589,148.74/28,082.04
  6. Step 6: Final answer
    x = 26,336.73

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Half scale
Find fourth proportional to 56,164.08, 77,388.30 and 38,227.44
Double scale
Find fourth proportional to 28,083.04, 38,695.53 and 19,114.72
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.