Home / 20,943.16-31,425.48-11,581.40

Finding the Fourth Proportional to 20,943.16, 31,425.48 and 11,581.40

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Solution

The fourth proportional to 20,943.16, 31,425.48 and 11,581.40 is: 17,378.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.16 : 31,425.48 = 11,581.40 : x
  2. Step 2: Convert to fraction form
    20,943.16/31,425.48 = 11,581.40/x
  3. Step 3: Cross multiply
    20,943.16x = 31,425.48 × 11,581.40
  4. Step 4: Simplify right side
    20,943.16x = 363,951,054.07
  5. Step 5: Solve for x
    x = 363,951,054.07/20,943.16
  6. Step 6: Final answer
    x = 17,378.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.