Home / 15,938.94-21,995.85-8,865.82

Finding the Fourth Proportional to 15,938.94, 21,995.85 and 8,865.82

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Solution

The fourth proportional to 15,938.94, 21,995.85 and 8,865.82 is: 12,234.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,938.94 : 21,995.85 = 8,865.82 : x
  2. Step 2: Convert to fraction form
    15,938.94/21,995.85 = 8,865.82/x
  3. Step 3: Cross multiply
    15,938.94x = 21,995.85 × 8,865.82
  4. Step 4: Simplify right side
    15,938.94x = 195,011,246.85
  5. Step 5: Solve for x
    x = 195,011,246.85/15,938.94
  6. Step 6: Final answer
    x = 12,234.89

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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.