Home / 20,130.20-30,227.70-13,585.40

Finding the Fourth Proportional to 20,130.20, 30,227.70 and 13,585.40

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Solution

The fourth proportional to 20,130.20, 30,227.70 and 13,585.40 is: 20,399.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.20 : 30,227.70 = 13,585.40 : x
  2. Step 2: Convert to fraction form
    20,130.20/30,227.70 = 13,585.40/x
  3. Step 3: Cross multiply
    20,130.20x = 30,227.70 × 13,585.40
  4. Step 4: Simplify right side
    20,130.20x = 410,655,395.58
  5. Step 5: Solve for x
    x = 410,655,395.58/20,130.20
  6. Step 6: Final answer
    x = 20,399.97

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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.