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Finding the Fourth Proportional to 28,497.69, 42,764.90 and 15,359.22

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Solution

The fourth proportional to 28,497.69, 42,764.90 and 15,359.22 is: 23,048.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,497.69 : 42,764.90 = 15,359.22 : x
  2. Step 2: Convert to fraction form
    28,497.69/42,764.90 = 15,359.22/x
  3. Step 3: Cross multiply
    28,497.69x = 42,764.90 × 15,359.22
  4. Step 4: Simplify right side
    28,497.69x = 656,835,430.58
  5. Step 5: Solve for x
    x = 656,835,430.58/28,497.69
  6. Step 6: Final answer
    x = 23,048.73

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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.