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Finding the Fourth Proportional to 15,206.80, 20,974.82 and 13,952.01

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Solution

The fourth proportional to 15,206.80, 20,974.82 and 13,952.01 is: 19,244.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,206.80 : 20,974.82 = 13,952.01 : x
  2. Step 2: Convert to fraction form
    15,206.80/20,974.82 = 13,952.01/x
  3. Step 3: Cross multiply
    15,206.80x = 20,974.82 × 13,952.01
  4. Step 4: Simplify right side
    15,206.80x = 292,640,898.39
  5. Step 5: Solve for x
    x = 292,640,898.39/15,206.80
  6. Step 6: Final answer
    x = 19,244.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.