Home / 35,421.20-48,882.76-20,318.12

Finding the Fourth Proportional to 35,421.20, 48,882.76 and 20,318.12

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Solution

The fourth proportional to 35,421.20, 48,882.76 and 20,318.12 is: 28,039.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,421.20 : 48,882.76 = 20,318.12 : x
  2. Step 2: Convert to fraction form
    35,421.20/48,882.76 = 20,318.12/x
  3. Step 3: Cross multiply
    35,421.20x = 48,882.76 × 20,318.12
  4. Step 4: Simplify right side
    35,421.20x = 993,205,488.40
  5. Step 5: Solve for x
    x = 993,205,488.40/35,421.20
  6. Step 6: Final answer
    x = 28,039.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.