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Finding the Fourth Proportional to 10,726.40, 16,070.40 and 9,190.40

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Solution

The fourth proportional to 10,726.40, 16,070.40 and 9,190.40 is: 13,769.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,726.40 : 16,070.40 = 9,190.40 : x
  2. Step 2: Convert to fraction form
    10,726.40/16,070.40 = 9,190.40/x
  3. Step 3: Cross multiply
    10,726.40x = 16,070.40 × 9,190.40
  4. Step 4: Simplify right side
    10,726.40x = 147,693,404.16
  5. Step 5: Solve for x
    x = 147,693,404.16/10,726.40
  6. Step 6: Final answer
    x = 13,769.15

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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.