Home / 28,020.02-38,670.35-20,934.14

Finding the Fourth Proportional to 28,020.02, 38,670.35 and 20,934.14

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Solution

The fourth proportional to 28,020.02, 38,670.35 and 20,934.14 is: 28,891.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.02 : 38,670.35 = 20,934.14 : x
  2. Step 2: Convert to fraction form
    28,020.02/38,670.35 = 20,934.14/x
  3. Step 3: Cross multiply
    28,020.02x = 38,670.35 × 20,934.14
  4. Step 4: Simplify right side
    28,020.02x = 809,530,222.73
  5. Step 5: Solve for x
    x = 809,530,222.73/28,020.02
  6. Step 6: Final answer
    x = 28,891.14

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Double scale
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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.