Home / 15,981.69-23,972.76-6,121.47

Finding the Fourth Proportional to 15,981.69, 23,972.76 and 6,121.47

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Solution

The fourth proportional to 15,981.69, 23,972.76 and 6,121.47 is: 9,182.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.69 : 23,972.76 = 6,121.47 : x
  2. Step 2: Convert to fraction form
    15,981.69/23,972.76 = 6,121.47/x
  3. Step 3: Cross multiply
    15,981.69x = 23,972.76 × 6,121.47
  4. Step 4: Simplify right side
    15,981.69x = 146,748,531.16
  5. Step 5: Solve for x
    x = 146,748,531.16/15,981.69
  6. Step 6: Final answer
    x = 9,182.29

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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.