Home / 10,981.40-15,154.15-5,945.58

Finding the Fourth Proportional to 10,981.40, 15,154.15 and 5,945.58

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Solution

The fourth proportional to 10,981.40, 15,154.15 and 5,945.58 is: 8,204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.40 : 15,154.15 = 5,945.58 : x
  2. Step 2: Convert to fraction form
    10,981.40/15,154.15 = 5,945.58/x
  3. Step 3: Cross multiply
    10,981.40x = 15,154.15 × 5,945.58
  4. Step 4: Simplify right side
    10,981.40x = 90,100,211.16
  5. Step 5: Solve for x
    x = 90,100,211.16/10,981.40
  6. Step 6: Final answer
    x = 8,204.80

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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.