Home / 20,055.38-30,065.20-9,518.90

Finding the Fourth Proportional to 20,055.38, 30,065.20 and 9,518.90

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Solution

The fourth proportional to 20,055.38, 30,065.20 and 9,518.90 is: 14,269.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,055.38 : 30,065.20 = 9,518.90 : x
  2. Step 2: Convert to fraction form
    20,055.38/30,065.20 = 9,518.90/x
  3. Step 3: Cross multiply
    20,055.38x = 30,065.20 × 9,518.90
  4. Step 4: Simplify right side
    20,055.38x = 286,187,458.16
  5. Step 5: Solve for x
    x = 286,187,458.16/20,055.38
  6. Step 6: Final answer
    x = 14,269.86

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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.