Home / 20,766.78-28,649.43-14,482.80

Finding the Fourth Proportional to 20,766.78, 28,649.43 and 14,482.80

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Solution

The fourth proportional to 20,766.78, 28,649.43 and 14,482.80 is: 19,980.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.78 : 28,649.43 = 14,482.80 : x
  2. Step 2: Convert to fraction form
    20,766.78/28,649.43 = 14,482.80/x
  3. Step 3: Cross multiply
    20,766.78x = 28,649.43 × 14,482.80
  4. Step 4: Simplify right side
    20,766.78x = 414,923,964.80
  5. Step 5: Solve for x
    x = 414,923,964.80/20,766.78
  6. Step 6: Final answer
    x = 19,980.18

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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.