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Finding the Fourth Proportional to 28,737.71, 39,652.09 and 16,798.74

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Solution

The fourth proportional to 28,737.71, 39,652.09 and 16,798.74 is: 23,178.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,737.71 : 39,652.09 = 16,798.74 : x
  2. Step 2: Convert to fraction form
    28,737.71/39,652.09 = 16,798.74/x
  3. Step 3: Cross multiply
    28,737.71x = 39,652.09 × 16,798.74
  4. Step 4: Simplify right side
    28,737.71x = 666,105,150.37
  5. Step 5: Solve for x
    x = 666,105,150.37/28,737.71
  6. Step 6: Final answer
    x = 23,178.78

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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.