Home / 20,116.53-27,770.80-12,567.05

Finding the Fourth Proportional to 20,116.53, 27,770.80 and 12,567.05

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Solution

The fourth proportional to 20,116.53, 27,770.80 and 12,567.05 is: 17,348.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.53 : 27,770.80 = 12,567.05 : x
  2. Step 2: Convert to fraction form
    20,116.53/27,770.80 = 12,567.05/x
  3. Step 3: Cross multiply
    20,116.53x = 27,770.80 × 12,567.05
  4. Step 4: Simplify right side
    20,116.53x = 348,996,989.57
  5. Step 5: Solve for x
    x = 348,996,989.57/20,116.53
  6. Step 6: Final answer
    x = 17,348.77

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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.