Home / 10,145.15-13,999.28-6,961.18

Finding the Fourth Proportional to 10,145.15, 13,999.28 and 6,961.18

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Solution

The fourth proportional to 10,145.15, 13,999.28 and 6,961.18 is: 9,605.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.15 : 13,999.28 = 6,961.18 : x
  2. Step 2: Convert to fraction form
    10,145.15/13,999.28 = 6,961.18/x
  3. Step 3: Cross multiply
    10,145.15x = 13,999.28 × 6,961.18
  4. Step 4: Simplify right side
    10,145.15x = 97,451,507.95
  5. Step 5: Solve for x
    x = 97,451,507.95/10,145.15
  6. Step 6: Final answer
    x = 9,605.72

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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.