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Finding the Fourth Proportional to 28,932.71, 43,398.59 and 9,210.98

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Solution

The fourth proportional to 28,932.71, 43,398.59 and 9,210.98 is: 13,816.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,932.71 : 43,398.59 = 9,210.98 : x
  2. Step 2: Convert to fraction form
    28,932.71/43,398.59 = 9,210.98/x
  3. Step 3: Cross multiply
    28,932.71x = 43,398.59 × 9,210.98
  4. Step 4: Simplify right side
    28,932.71x = 399,743,281.47
  5. Step 5: Solve for x
    x = 399,743,281.47/28,932.71
  6. Step 6: Final answer
    x = 13,816.31

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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.