Home / 10,251.10-15,340.20-7,116.40

Finding the Fourth Proportional to 10,251.10, 15,340.20 and 7,116.40

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Solution

The fourth proportional to 10,251.10, 15,340.20 and 7,116.40 is: 10,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,251.10 : 15,340.20 = 7,116.40 : x
  2. Step 2: Convert to fraction form
    10,251.10/15,340.20 = 7,116.40/x
  3. Step 3: Cross multiply
    10,251.10x = 15,340.20 × 7,116.40
  4. Step 4: Simplify right side
    10,251.10x = 109,166,999.28
  5. Step 5: Solve for x
    x = 109,166,999.28/10,251.10
  6. Step 6: Final answer
    x = 10,649.30

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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.