Home / 21,624.39-29,836.56-13,126.30

Finding the Fourth Proportional to 21,624.39, 29,836.56 and 13,126.30

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Solution

The fourth proportional to 21,624.39, 29,836.56 and 13,126.30 is: 18,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.39 : 29,836.56 = 13,126.30 : x
  2. Step 2: Convert to fraction form
    21,624.39/29,836.56 = 13,126.30/x
  3. Step 3: Cross multiply
    21,624.39x = 29,836.56 × 13,126.30
  4. Step 4: Simplify right side
    21,624.39x = 391,643,670.34
  5. Step 5: Solve for x
    x = 391,643,670.34/21,624.39
  6. Step 6: Final answer
    x = 18,111.20

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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.