Home / 20,621.10-30,931.65-17,165.10

Finding the Fourth Proportional to 20,621.10, 30,931.65 and 17,165.10

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Solution

The fourth proportional to 20,621.10, 30,931.65 and 17,165.10 is: 25,747.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.10 : 30,931.65 = 17,165.10 : x
  2. Step 2: Convert to fraction form
    20,621.10/30,931.65 = 17,165.10/x
  3. Step 3: Cross multiply
    20,621.10x = 30,931.65 × 17,165.10
  4. Step 4: Simplify right side
    20,621.10x = 530,944,865.42
  5. Step 5: Solve for x
    x = 530,944,865.42/20,621.10
  6. Step 6: Final answer
    x = 25,747.65

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Similar ratio
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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.