Home / 15,114.47-20,854.76-8,398.70

Finding the Fourth Proportional to 15,114.47, 20,854.76 and 8,398.70

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Solution

The fourth proportional to 15,114.47, 20,854.76 and 8,398.70 is: 11,588.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,114.47 : 20,854.76 = 8,398.70 : x
  2. Step 2: Convert to fraction form
    15,114.47/20,854.76 = 8,398.70/x
  3. Step 3: Cross multiply
    15,114.47x = 20,854.76 × 8,398.70
  4. Step 4: Simplify right side
    15,114.47x = 175,152,726.54
  5. Step 5: Solve for x
    x = 175,152,726.54/15,114.47
  6. Step 6: Final answer
    x = 11,588.41

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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.