Home / 15,925.28-21,976.89-8,851.70

Finding the Fourth Proportional to 15,925.28, 21,976.89 and 8,851.70

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Solution

The fourth proportional to 15,925.28, 21,976.89 and 8,851.70 is: 12,215.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,925.28 : 21,976.89 = 8,851.70 : x
  2. Step 2: Convert to fraction form
    15,925.28/21,976.89 = 8,851.70/x
  3. Step 3: Cross multiply
    15,925.28x = 21,976.89 × 8,851.70
  4. Step 4: Simplify right side
    15,925.28x = 194,532,837.21
  5. Step 5: Solve for x
    x = 194,532,837.21/15,925.28
  6. Step 6: Final answer
    x = 12,215.35

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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.