Home / 15,117.05-20,862.23-8,402.47

Finding the Fourth Proportional to 15,117.05, 20,862.23 and 8,402.47

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Solution

The fourth proportional to 15,117.05, 20,862.23 and 8,402.47 is: 11,595.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.05 : 20,862.23 = 8,402.47 : x
  2. Step 2: Convert to fraction form
    15,117.05/20,862.23 = 8,402.47/x
  3. Step 3: Cross multiply
    15,117.05x = 20,862.23 × 8,402.47
  4. Step 4: Simplify right side
    15,117.05x = 175,294,167.54
  5. Step 5: Solve for x
    x = 175,294,167.54/15,117.05
  6. Step 6: Final answer
    x = 11,595.79

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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.