Home / 15,172.84-20,937.45-8,458.17

Finding the Fourth Proportional to 15,172.84, 20,937.45 and 8,458.17

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Solution

The fourth proportional to 15,172.84, 20,937.45 and 8,458.17 is: 11,671.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.84 : 20,937.45 = 8,458.17 : x
  2. Step 2: Convert to fraction form
    15,172.84/20,937.45 = 8,458.17/x
  3. Step 3: Cross multiply
    15,172.84x = 20,937.45 × 8,458.17
  4. Step 4: Simplify right side
    15,172.84x = 177,092,511.47
  5. Step 5: Solve for x
    x = 177,092,511.47/15,172.84
  6. Step 6: Final answer
    x = 11,671.68

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1.5x scale

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.