Home / 15,422.32-21,293.20-10,126.12

Finding the Fourth Proportional to 15,422.32, 21,293.20 and 10,126.12

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Solution

The fourth proportional to 15,422.32, 21,293.20 and 10,126.12 is: 13,980.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.32 : 21,293.20 = 10,126.12 : x
  2. Step 2: Convert to fraction form
    15,422.32/21,293.20 = 10,126.12/x
  3. Step 3: Cross multiply
    15,422.32x = 21,293.20 × 10,126.12
  4. Step 4: Simplify right side
    15,422.32x = 215,617,498.38
  5. Step 5: Solve for x
    x = 215,617,498.38/15,422.32
  6. Step 6: Final answer
    x = 13,980.87

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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.