Home / 19,902.20-29,853.30-13,681.40

Finding the Fourth Proportional to 19,902.20, 29,853.30 and 13,681.40

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Solution

The fourth proportional to 19,902.20, 29,853.30 and 13,681.40 is: 20,522.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,902.20 : 29,853.30 = 13,681.40 : x
  2. Step 2: Convert to fraction form
    19,902.20/29,853.30 = 13,681.40/x
  3. Step 3: Cross multiply
    19,902.20x = 29,853.30 × 13,681.40
  4. Step 4: Simplify right side
    19,902.20x = 408,434,938.62
  5. Step 5: Solve for x
    x = 408,434,938.62/19,902.20
  6. Step 6: Final answer
    x = 20,522.10

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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.