Home / 20,649.80-28,499.18-12,266.32

Finding the Fourth Proportional to 20,649.80, 28,499.18 and 12,266.32

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Solution

The fourth proportional to 20,649.80, 28,499.18 and 12,266.32 is: 16,928.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.80 : 28,499.18 = 12,266.32 : x
  2. Step 2: Convert to fraction form
    20,649.80/28,499.18 = 12,266.32/x
  3. Step 3: Cross multiply
    20,649.80x = 28,499.18 × 12,266.32
  4. Step 4: Simplify right side
    20,649.80x = 349,580,061.62
  5. Step 5: Solve for x
    x = 349,580,061.62/20,649.80
  6. Step 6: Final answer
    x = 16,928.98

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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.