Home / 10,981.20-15,153.96-6,265.44

Finding the Fourth Proportional to 10,981.20, 15,153.96 and 6,265.44

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Solution

The fourth proportional to 10,981.20, 15,153.96 and 6,265.44 is: 8,646.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.20 : 15,153.96 = 6,265.44 : x
  2. Step 2: Convert to fraction form
    10,981.20/15,153.96 = 6,265.44/x
  3. Step 3: Cross multiply
    10,981.20x = 15,153.96 × 6,265.44
  4. Step 4: Simplify right side
    10,981.20x = 94,946,227.14
  5. Step 5: Solve for x
    x = 94,946,227.14/10,981.20
  6. Step 6: Final answer
    x = 8,646.25

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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.