Home / 10,188.90-15,213.64-9,127.88

Finding the Fourth Proportional to 10,188.90, 15,213.64 and 9,127.88

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Solution

The fourth proportional to 10,188.90, 15,213.64 and 9,127.88 is: 13,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,188.90 : 15,213.64 = 9,127.88 : x
  2. Step 2: Convert to fraction form
    10,188.90/15,213.64 = 9,127.88/x
  3. Step 3: Cross multiply
    10,188.90x = 15,213.64 × 9,127.88
  4. Step 4: Simplify right side
    10,188.90x = 138,868,280.28
  5. Step 5: Solve for x
    x = 138,868,280.28/10,188.90
  6. Step 6: Final answer
    x = 13,629.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.