Home / 20,995.95-31,494.15-8,986.47

Finding the Fourth Proportional to 20,995.95, 31,494.15 and 8,986.47

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Solution

The fourth proportional to 20,995.95, 31,494.15 and 8,986.47 is: 13,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.95 : 31,494.15 = 8,986.47 : x
  2. Step 2: Convert to fraction form
    20,995.95/31,494.15 = 8,986.47/x
  3. Step 3: Cross multiply
    20,995.95x = 31,494.15 × 8,986.47
  4. Step 4: Simplify right side
    20,995.95x = 283,021,234.15
  5. Step 5: Solve for x
    x = 283,021,234.15/20,995.95
  6. Step 6: Final answer
    x = 13,479.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.