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Finding the Fourth Proportional to 28,642.50, 39,551.73 and 17,905.71

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Solution

The fourth proportional to 28,642.50, 39,551.73 and 17,905.71 is: 24,725.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,642.50 : 39,551.73 = 17,905.71 : x
  2. Step 2: Convert to fraction form
    28,642.50/39,551.73 = 17,905.71/x
  3. Step 3: Cross multiply
    28,642.50x = 39,551.73 × 17,905.71
  4. Step 4: Simplify right side
    28,642.50x = 708,201,807.38
  5. Step 5: Solve for x
    x = 708,201,807.38/28,642.50
  6. Step 6: Final answer
    x = 24,725.56

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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.