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Finding the Fourth Proportional to 28,398.69, 42,598.08 and 28,357.68

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Solution

The fourth proportional to 28,398.69, 42,598.08 and 28,357.68 is: 42,536.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,398.69 : 42,598.08 = 28,357.68 : x
  2. Step 2: Convert to fraction form
    28,398.69/42,598.08 = 28,357.68/x
  3. Step 3: Cross multiply
    28,398.69x = 42,598.08 × 28,357.68
  4. Step 4: Simplify right side
    28,398.69x = 1,207,982,721.25
  5. Step 5: Solve for x
    x = 1,207,982,721.25/28,398.69
  6. Step 6: Final answer
    x = 42,536.56

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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.