Home / 21,089.57-31,634.33-8,615.46

Finding the Fourth Proportional to 21,089.57, 31,634.33 and 8,615.46

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Solution

The fourth proportional to 21,089.57, 31,634.33 and 8,615.46 is: 12,923.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.57 : 31,634.33 = 8,615.46 : x
  2. Step 2: Convert to fraction form
    21,089.57/31,634.33 = 8,615.46/x
  3. Step 3: Cross multiply
    21,089.57x = 31,634.33 × 8,615.46
  4. Step 4: Simplify right side
    21,089.57x = 272,544,304.74
  5. Step 5: Solve for x
    x = 272,544,304.74/21,089.57
  6. Step 6: Final answer
    x = 12,923.18

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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.