Home / 20,426.66-30,640.62-6,387.20

Finding the Fourth Proportional to 20,426.66, 30,640.62 and 6,387.20

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Solution

The fourth proportional to 20,426.66, 30,640.62 and 6,387.20 is: 9,581.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.66 : 30,640.62 = 6,387.20 : x
  2. Step 2: Convert to fraction form
    20,426.66/30,640.62 = 6,387.20/x
  3. Step 3: Cross multiply
    20,426.66x = 30,640.62 × 6,387.20
  4. Step 4: Simplify right side
    20,426.66x = 195,707,768.06
  5. Step 5: Solve for x
    x = 195,707,768.06/20,426.66
  6. Step 6: Final answer
    x = 9,581.00

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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.