Home / 20,243.90-27,949.58-12,700.58

Finding the Fourth Proportional to 20,243.90, 27,949.58 and 12,700.58

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Solution

The fourth proportional to 20,243.90, 27,949.58 and 12,700.58 is: 17,534.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.90 : 27,949.58 = 12,700.58 : x
  2. Step 2: Convert to fraction form
    20,243.90/27,949.58 = 12,700.58/x
  3. Step 3: Cross multiply
    20,243.90x = 27,949.58 × 12,700.58
  4. Step 4: Simplify right side
    20,243.90x = 354,975,876.76
  5. Step 5: Solve for x
    x = 354,975,876.76/20,243.90
  6. Step 6: Final answer
    x = 17,534.96

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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.