Home / 15,925.20-21,976.80-8,851.44

Finding the Fourth Proportional to 15,925.20, 21,976.80 and 8,851.44

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Solution

The fourth proportional to 15,925.20, 21,976.80 and 8,851.44 is: 12,215.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,925.20 : 21,976.80 = 8,851.44 : x
  2. Step 2: Convert to fraction form
    15,925.20/21,976.80 = 8,851.44/x
  3. Step 3: Cross multiply
    15,925.20x = 21,976.80 × 8,851.44
  4. Step 4: Simplify right side
    15,925.20x = 194,526,326.59
  5. Step 5: Solve for x
    x = 194,526,326.59/15,925.20
  6. Step 6: Final answer
    x = 12,215.00

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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.