Home / 20,130.15-30,195.13-17,140.76

Finding the Fourth Proportional to 20,130.15, 30,195.13 and 17,140.76

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Solution

The fourth proportional to 20,130.15, 30,195.13 and 17,140.76 is: 25,711.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.15 : 30,195.13 = 17,140.76 : x
  2. Step 2: Convert to fraction form
    20,130.15/30,195.13 = 17,140.76/x
  3. Step 3: Cross multiply
    20,130.15x = 30,195.13 × 17,140.76
  4. Step 4: Simplify right side
    20,130.15x = 517,567,476.50
  5. Step 5: Solve for x
    x = 517,567,476.50/20,130.15
  6. Step 6: Final answer
    x = 25,711.06

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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.