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Finding the Fourth Proportional to 14,124.60, 21,186.90 and 10,406.70

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Solution

The fourth proportional to 14,124.60, 21,186.90 and 10,406.70 is: 15,610.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.60 : 21,186.90 = 10,406.70 : x
  2. Step 2: Convert to fraction form
    14,124.60/21,186.90 = 10,406.70/x
  3. Step 3: Cross multiply
    14,124.60x = 21,186.90 × 10,406.70
  4. Step 4: Simplify right side
    14,124.60x = 220,485,712.23
  5. Step 5: Solve for x
    x = 220,485,712.23/14,124.60
  6. Step 6: Final answer
    x = 15,610.05

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Similar ratio
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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.