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Finding the Fourth Proportional to 28,343.42, 42,496.90 and 13,552.02

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Solution

The fourth proportional to 28,343.42, 42,496.90 and 13,552.02 is: 20,319.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.42 : 42,496.90 = 13,552.02 : x
  2. Step 2: Convert to fraction form
    28,343.42/42,496.90 = 13,552.02/x
  3. Step 3: Cross multiply
    28,343.42x = 42,496.90 × 13,552.02
  4. Step 4: Simplify right side
    28,343.42x = 575,918,838.74
  5. Step 5: Solve for x
    x = 575,918,838.74/28,343.42
  6. Step 6: Final answer
    x = 20,319.31

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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.