Home / 20,830.60-28,716.32-14,851.88

Finding the Fourth Proportional to 20,830.60, 28,716.32 and 14,851.88

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Solution

The fourth proportional to 20,830.60, 28,716.32 and 14,851.88 is: 20,474.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.60 : 28,716.32 = 14,851.88 : x
  2. Step 2: Convert to fraction form
    20,830.60/28,716.32 = 14,851.88/x
  3. Step 3: Cross multiply
    20,830.60x = 28,716.32 × 14,851.88
  4. Step 4: Simplify right side
    20,830.60x = 426,491,459.67
  5. Step 5: Solve for x
    x = 426,491,459.67/20,830.60
  6. Step 6: Final answer
    x = 20,474.28

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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.