Home / 10,478.10-15,690.39-10,166.43

Finding the Fourth Proportional to 10,478.10, 15,690.39 and 10,166.43

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Solution

The fourth proportional to 10,478.10, 15,690.39 and 10,166.43 is: 15,223.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.10 : 15,690.39 = 10,166.43 : x
  2. Step 2: Convert to fraction form
    10,478.10/15,690.39 = 10,166.43/x
  3. Step 3: Cross multiply
    10,478.10x = 15,690.39 × 10,166.43
  4. Step 4: Simplify right side
    10,478.10x = 159,515,251.61
  5. Step 5: Solve for x
    x = 159,515,251.61/10,478.10
  6. Step 6: Final answer
    x = 15,223.68

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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.