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Finding the Fourth Proportional to 39,650.64, 59,412.72 and 20,929.92

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Solution

The fourth proportional to 39,650.64, 59,412.72 and 20,929.92 is: 31,361.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,650.64 : 59,412.72 = 20,929.92 : x
  2. Step 2: Convert to fraction form
    39,650.64/59,412.72 = 20,929.92/x
  3. Step 3: Cross multiply
    39,650.64x = 59,412.72 × 20,929.92
  4. Step 4: Simplify right side
    39,650.64x = 1,243,503,476.58
  5. Step 5: Solve for x
    x = 1,243,503,476.58/39,650.64
  6. Step 6: Final answer
    x = 31,361.50

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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.