Home / 15,865.08-21,894.30-8,791.80

Finding the Fourth Proportional to 15,865.08, 21,894.30 and 8,791.80

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Solution

The fourth proportional to 15,865.08, 21,894.30 and 8,791.80 is: 12,132.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,865.08 : 21,894.30 = 8,791.80 : x
  2. Step 2: Convert to fraction form
    15,865.08/21,894.30 = 8,791.80/x
  3. Step 3: Cross multiply
    15,865.08x = 21,894.30 × 8,791.80
  4. Step 4: Simplify right side
    15,865.08x = 192,490,306.74
  5. Step 5: Solve for x
    x = 192,490,306.74/15,865.08
  6. Step 6: Final answer
    x = 12,132.96

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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.