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Finding the Fourth Proportional to 39,943.68, 59,915.54 and 13,648.68

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Solution

The fourth proportional to 39,943.68, 59,915.54 and 13,648.68 is: 20,473.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,943.68 : 59,915.54 = 13,648.68 : x
  2. Step 2: Convert to fraction form
    39,943.68/59,915.54 = 13,648.68/x
  3. Step 3: Cross multiply
    39,943.68x = 59,915.54 × 13,648.68
  4. Step 4: Simplify right side
    39,943.68x = 817,768,032.49
  5. Step 5: Solve for x
    x = 817,768,032.49/39,943.68
  6. Step 6: Final answer
    x = 20,473.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.