Home / 10,172.19-15,287.45-4,981.71

Finding the Fourth Proportional to 10,172.19, 15,287.45 and 4,981.71

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Solution

The fourth proportional to 10,172.19, 15,287.45 and 4,981.71 is: 7,486.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,172.19 : 15,287.45 = 4,981.71 : x
  2. Step 2: Convert to fraction form
    10,172.19/15,287.45 = 4,981.71/x
  3. Step 3: Cross multiply
    10,172.19x = 15,287.45 × 4,981.71
  4. Step 4: Simplify right side
    10,172.19x = 76,157,617.63
  5. Step 5: Solve for x
    x = 76,157,617.63/10,172.19
  6. Step 6: Final answer
    x = 7,486.85

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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.