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Finding the Fourth Proportional to 10,600.40, 15,886.20 and 7,080.40

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Solution

The fourth proportional to 10,600.40, 15,886.20 and 7,080.40 is: 10,610.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,600.40 : 15,886.20 = 7,080.40 : x
  2. Step 2: Convert to fraction form
    10,600.40/15,886.20 = 7,080.40/x
  3. Step 3: Cross multiply
    10,600.40x = 15,886.20 × 7,080.40
  4. Step 4: Simplify right side
    10,600.40x = 112,480,650.48
  5. Step 5: Solve for x
    x = 112,480,650.48/10,600.40
  6. Step 6: Final answer
    x = 10,610.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.