Home / 15,429.13-21,276.27-13,198.39

Finding the Fourth Proportional to 15,429.13, 21,276.27 and 13,198.39

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Solution

The fourth proportional to 15,429.13, 21,276.27 and 13,198.39 is: 18,200.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.13 : 21,276.27 = 13,198.39 : x
  2. Step 2: Convert to fraction form
    15,429.13/21,276.27 = 13,198.39/x
  3. Step 3: Cross multiply
    15,429.13x = 21,276.27 × 13,198.39
  4. Step 4: Simplify right side
    15,429.13x = 280,812,456.01
  5. Step 5: Solve for x
    x = 280,812,456.01/15,429.13
  6. Step 6: Final answer
    x = 18,200.15

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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.