Home / 15,937.60-21,991.75-8,862.66

Finding the Fourth Proportional to 15,937.60, 21,991.75 and 8,862.66

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Solution

The fourth proportional to 15,937.60, 21,991.75 and 8,862.66 is: 12,229.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,937.60 : 21,991.75 = 8,862.66 : x
  2. Step 2: Convert to fraction form
    15,937.60/21,991.75 = 8,862.66/x
  3. Step 3: Cross multiply
    15,937.60x = 21,991.75 × 8,862.66
  4. Step 4: Simplify right side
    15,937.60x = 194,905,403.06
  5. Step 5: Solve for x
    x = 194,905,403.06/15,937.60
  6. Step 6: Final answer
    x = 12,229.28

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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.