Home / 10,190.90-15,216.62-9,129.88

Finding the Fourth Proportional to 10,190.90, 15,216.62 and 9,129.88

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Solution

The fourth proportional to 10,190.90, 15,216.62 and 9,129.88 is: 13,632.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,190.90 : 15,216.62 = 9,129.88 : x
  2. Step 2: Convert to fraction form
    10,190.90/15,216.62 = 9,129.88/x
  3. Step 3: Cross multiply
    10,190.90x = 15,216.62 × 9,129.88
  4. Step 4: Simplify right side
    10,190.90x = 138,925,914.61
  5. Step 5: Solve for x
    x = 138,925,914.61/10,190.90
  6. Step 6: Final answer
    x = 13,632.35

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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.