Home / 15,298.56-21,117.76-13,166.24

Finding the Fourth Proportional to 15,298.56, 21,117.76 and 13,166.24

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Solution

The fourth proportional to 15,298.56, 21,117.76 and 13,166.24 is: 18,174.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,298.56 : 21,117.76 = 13,166.24 : x
  2. Step 2: Convert to fraction form
    15,298.56/21,117.76 = 13,166.24/x
  3. Step 3: Cross multiply
    15,298.56x = 21,117.76 × 13,166.24
  4. Step 4: Simplify right side
    15,298.56x = 278,041,496.42
  5. Step 5: Solve for x
    x = 278,041,496.42/15,298.56
  6. Step 6: Final answer
    x = 18,174.36

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Similar ratio
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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.