Home / 15,938.44-21,995.86-8,865

Finding the Fourth Proportional to 15,938.44, 21,995.86 and 8,865

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Solution

The fourth proportional to 15,938.44, 21,995.86 and 8,865 is: 12,234.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,938.44 : 21,995.86 = 8,865 : x
  2. Step 2: Convert to fraction form
    15,938.44/21,995.86 = 8,865/x
  3. Step 3: Cross multiply
    15,938.44x = 21,995.86 × 8,865
  4. Step 4: Simplify right side
    15,938.44x = 194,993,298.90
  5. Step 5: Solve for x
    x = 194,993,298.90/15,938.44
  6. Step 6: Final answer
    x = 12,234.15

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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.