Home / 20,627.56-30,918.30-18,966.88

Finding the Fourth Proportional to 20,627.56, 30,918.30 and 18,966.88

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Solution

The fourth proportional to 20,627.56, 30,918.30 and 18,966.88 is: 28,429.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.56 : 30,918.30 = 18,966.88 : x
  2. Step 2: Convert to fraction form
    20,627.56/30,918.30 = 18,966.88/x
  3. Step 3: Cross multiply
    20,627.56x = 30,918.30 × 18,966.88
  4. Step 4: Simplify right side
    20,627.56x = 586,423,685.90
  5. Step 5: Solve for x
    x = 586,423,685.90/20,627.56
  6. Step 6: Final answer
    x = 28,429.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.