Home / 15,889.32-21,927.15-8,815.74

Finding the Fourth Proportional to 15,889.32, 21,927.15 and 8,815.74

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Solution

The fourth proportional to 15,889.32, 21,927.15 and 8,815.74 is: 12,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,889.32 : 21,927.15 = 8,815.74 : x
  2. Step 2: Convert to fraction form
    15,889.32/21,927.15 = 8,815.74/x
  3. Step 3: Cross multiply
    15,889.32x = 21,927.15 × 8,815.74
  4. Step 4: Simplify right side
    15,889.32x = 193,304,053.34
  5. Step 5: Solve for x
    x = 193,304,053.34/15,889.32
  6. Step 6: Final answer
    x = 12,165.66

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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.