Home / 20,429.61-28,168.34-14,755.29

Finding the Fourth Proportional to 20,429.61, 28,168.34 and 14,755.29

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Solution

The fourth proportional to 20,429.61, 28,168.34 and 14,755.29 is: 20,344.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.61 : 28,168.34 = 14,755.29 : x
  2. Step 2: Convert to fraction form
    20,429.61/28,168.34 = 14,755.29/x
  3. Step 3: Cross multiply
    20,429.61x = 28,168.34 × 14,755.29
  4. Step 4: Simplify right side
    20,429.61x = 415,631,951.74
  5. Step 5: Solve for x
    x = 415,631,951.74/20,429.61
  6. Step 6: Final answer
    x = 20,344.59

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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.