Home / 20,126.04-27,756.90-12,957.18

Finding the Fourth Proportional to 20,126.04, 27,756.90 and 12,957.18

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Solution

The fourth proportional to 20,126.04, 27,756.90 and 12,957.18 is: 17,869.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.04 : 27,756.90 = 12,957.18 : x
  2. Step 2: Convert to fraction form
    20,126.04/27,756.90 = 12,957.18/x
  3. Step 3: Cross multiply
    20,126.04x = 27,756.90 × 12,957.18
  4. Step 4: Simplify right side
    20,126.04x = 359,651,149.54
  5. Step 5: Solve for x
    x = 359,651,149.54/20,126.04
  6. Step 6: Final answer
    x = 17,869.94

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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.