Home / 14,129.20-21,218.10-9,998.20

Finding the Fourth Proportional to 14,129.20, 21,218.10 and 9,998.20

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Solution

The fourth proportional to 14,129.20, 21,218.10 and 9,998.20 is: 15,014.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,129.20 : 21,218.10 = 9,998.20 : x
  2. Step 2: Convert to fraction form
    14,129.20/21,218.10 = 9,998.20/x
  3. Step 3: Cross multiply
    14,129.20x = 21,218.10 × 9,998.20
  4. Step 4: Simplify right side
    14,129.20x = 212,142,807.42
  5. Step 5: Solve for x
    x = 212,142,807.42/14,129.20
  6. Step 6: Final answer
    x = 15,014.50

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Half scale
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Double scale
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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.