Home / 19,422.30-29,133.45-18,515.10

Finding the Fourth Proportional to 19,422.30, 29,133.45 and 18,515.10

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Solution

The fourth proportional to 19,422.30, 29,133.45 and 18,515.10 is: 27,772.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,422.30 : 29,133.45 = 18,515.10 : x
  2. Step 2: Convert to fraction form
    19,422.30/29,133.45 = 18,515.10/x
  3. Step 3: Cross multiply
    19,422.30x = 29,133.45 × 18,515.10
  4. Step 4: Simplify right side
    19,422.30x = 539,408,740.10
  5. Step 5: Solve for x
    x = 539,408,740.10/19,422.30
  6. Step 6: Final answer
    x = 27,772.65

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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.