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Finding the Fourth Proportional to 10,951.30, 16,428.15 and 10,605.70

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Solution

The fourth proportional to 10,951.30, 16,428.15 and 10,605.70 is: 15,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,951.30 : 16,428.15 = 10,605.70 : x
  2. Step 2: Convert to fraction form
    10,951.30/16,428.15 = 10,605.70/x
  3. Step 3: Cross multiply
    10,951.30x = 16,428.15 × 10,605.70
  4. Step 4: Simplify right side
    10,951.30x = 174,232,030.46
  5. Step 5: Solve for x
    x = 174,232,030.46/10,951.30
  6. Step 6: Final answer
    x = 15,909.71

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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.