Home / 28,178.19-38,885.90-15,602.94

Finding the Fourth Proportional to 28,178.19, 38,885.90 and 15,602.94

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Solution

The fourth proportional to 28,178.19, 38,885.90 and 15,602.94 is: 21,532.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.19 : 38,885.90 = 15,602.94 : x
  2. Step 2: Convert to fraction form
    28,178.19/38,885.90 = 15,602.94/x
  3. Step 3: Cross multiply
    28,178.19x = 38,885.90 × 15,602.94
  4. Step 4: Simplify right side
    28,178.19x = 606,734,364.55
  5. Step 5: Solve for x
    x = 606,734,364.55/28,178.19
  6. Step 6: Final answer
    x = 21,532.06

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Half scale
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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.