Home / 20,158.27-30,253.40-10,805.20

Finding the Fourth Proportional to 20,158.27, 30,253.40 and 10,805.20

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Solution

The fourth proportional to 20,158.27, 30,253.40 and 10,805.20 is: 16,216.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.27 : 30,253.40 = 10,805.20 : x
  2. Step 2: Convert to fraction form
    20,158.27/30,253.40 = 10,805.20/x
  3. Step 3: Cross multiply
    20,158.27x = 30,253.40 × 10,805.20
  4. Step 4: Simplify right side
    20,158.27x = 326,893,948.54
  5. Step 5: Solve for x
    x = 326,893,948.54/20,158.27
  6. Step 6: Final answer
    x = 16,216.37

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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.