Home / 15,218.28-21,001.14-8,503.92

Finding the Fourth Proportional to 15,218.28, 21,001.14 and 8,503.92

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Solution

The fourth proportional to 15,218.28, 21,001.14 and 8,503.92 is: 11,735.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.28 : 21,001.14 = 8,503.92 : x
  2. Step 2: Convert to fraction form
    15,218.28/21,001.14 = 8,503.92/x
  3. Step 3: Cross multiply
    15,218.28x = 21,001.14 × 8,503.92
  4. Step 4: Simplify right side
    15,218.28x = 178,592,014.47
  5. Step 5: Solve for x
    x = 178,592,014.47/15,218.28
  6. Step 6: Final answer
    x = 11,735.36

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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.