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Finding the Fourth Proportional to 10,368.47, 15,552.69 and 8,278.68

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Solution

The fourth proportional to 10,368.47, 15,552.69 and 8,278.68 is: 12,418.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,368.47 : 15,552.69 = 8,278.68 : x
  2. Step 2: Convert to fraction form
    10,368.47/15,552.69 = 8,278.68/x
  3. Step 3: Cross multiply
    10,368.47x = 15,552.69 × 8,278.68
  4. Step 4: Simplify right side
    10,368.47x = 128,755,817.49
  5. Step 5: Solve for x
    x = 128,755,817.49/10,368.47
  6. Step 6: Final answer
    x = 12,418.01

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1.5x scale

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.