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Finding the Fourth Proportional to 28,503.26, 42,764.11 and 13,710.25

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Solution

The fourth proportional to 28,503.26, 42,764.11 and 13,710.25 is: 20,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,503.26 : 42,764.11 = 13,710.25 : x
  2. Step 2: Convert to fraction form
    28,503.26/42,764.11 = 13,710.25/x
  3. Step 3: Cross multiply
    28,503.26x = 42,764.11 × 13,710.25
  4. Step 4: Simplify right side
    28,503.26x = 586,306,356.76
  5. Step 5: Solve for x
    x = 586,306,356.76/28,503.26
  6. Step 6: Final answer
    x = 20,569.80

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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.