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Finding the Fourth Proportional to 28,398.42, 42,582.80 and 10,614.47

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Solution

The fourth proportional to 28,398.42, 42,582.80 and 10,614.47 is: 15,916.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,398.42 : 42,582.80 = 10,614.47 : x
  2. Step 2: Convert to fraction form
    28,398.42/42,582.80 = 10,614.47/x
  3. Step 3: Cross multiply
    28,398.42x = 42,582.80 × 10,614.47
  4. Step 4: Simplify right side
    28,398.42x = 451,993,587.13
  5. Step 5: Solve for x
    x = 451,993,587.13/28,398.42
  6. Step 6: Final answer
    x = 15,916.15

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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.