Home / 21,624.32-29,836.48-13,126.24

Finding the Fourth Proportional to 21,624.32, 29,836.48 and 13,126.24

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Solution

The fourth proportional to 21,624.32, 29,836.48 and 13,126.24 is: 18,111.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.32 : 29,836.48 = 13,126.24 : x
  2. Step 2: Convert to fraction form
    21,624.32/29,836.48 = 13,126.24/x
  3. Step 3: Cross multiply
    21,624.32x = 29,836.48 × 13,126.24
  4. Step 4: Simplify right side
    21,624.32x = 391,640,689.83
  5. Step 5: Solve for x
    x = 391,640,689.83/21,624.32
  6. Step 6: Final answer
    x = 18,111.12

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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.