Home / 20,885.75-31,292.12-17,398.19

Finding the Fourth Proportional to 20,885.75, 31,292.12 and 17,398.19

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Solution

The fourth proportional to 20,885.75, 31,292.12 and 17,398.19 is: 26,066.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.75 : 31,292.12 = 17,398.19 : x
  2. Step 2: Convert to fraction form
    20,885.75/31,292.12 = 17,398.19/x
  3. Step 3: Cross multiply
    20,885.75x = 31,292.12 × 17,398.19
  4. Step 4: Simplify right side
    20,885.75x = 544,426,370.99
  5. Step 5: Solve for x
    x = 544,426,370.99/20,885.75
  6. Step 6: Final answer
    x = 26,066.88

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1.5x scale

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.