Home / 15,470.62-21,348.12-8,756.50

Finding the Fourth Proportional to 15,470.62, 21,348.12 and 8,756.50

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Solution

The fourth proportional to 15,470.62, 21,348.12 and 8,756.50 is: 12,083.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.62 : 21,348.12 = 8,756.50 : x
  2. Step 2: Convert to fraction form
    15,470.62/21,348.12 = 8,756.50/x
  3. Step 3: Cross multiply
    15,470.62x = 21,348.12 × 8,756.50
  4. Step 4: Simplify right side
    15,470.62x = 186,934,812.78
  5. Step 5: Solve for x
    x = 186,934,812.78/15,470.62
  6. Step 6: Final answer
    x = 12,083.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.