Home / 10,385.12-15,571.68-7,102.18

Finding the Fourth Proportional to 10,385.12, 15,571.68 and 7,102.18

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Solution

The fourth proportional to 10,385.12, 15,571.68 and 7,102.18 is: 10,649.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.12 : 15,571.68 = 7,102.18 : x
  2. Step 2: Convert to fraction form
    10,385.12/15,571.68 = 7,102.18/x
  3. Step 3: Cross multiply
    10,385.12x = 15,571.68 × 7,102.18
  4. Step 4: Simplify right side
    10,385.12x = 110,592,874.26
  5. Step 5: Solve for x
    x = 110,592,874.26/10,385.12
  6. Step 6: Final answer
    x = 10,649.17

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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.