Home / 19,947.40-29,921.10-13,337.80

Finding the Fourth Proportional to 19,947.40, 29,921.10 and 13,337.80

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Solution

The fourth proportional to 19,947.40, 29,921.10 and 13,337.80 is: 20,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.40 : 29,921.10 = 13,337.80 : x
  2. Step 2: Convert to fraction form
    19,947.40/29,921.10 = 13,337.80/x
  3. Step 3: Cross multiply
    19,947.40x = 29,921.10 × 13,337.80
  4. Step 4: Simplify right side
    19,947.40x = 399,081,647.58
  5. Step 5: Solve for x
    x = 399,081,647.58/19,947.40
  6. Step 6: Final answer
    x = 20,006.70

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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.