Home / 30,350.85-41,869.29-20,281.77

Finding the Fourth Proportional to 30,350.85, 41,869.29 and 20,281.77

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Solution

The fourth proportional to 30,350.85, 41,869.29 and 20,281.77 is: 27,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,350.85 : 41,869.29 = 20,281.77 : x
  2. Step 2: Convert to fraction form
    30,350.85/41,869.29 = 20,281.77/x
  3. Step 3: Cross multiply
    30,350.85x = 41,869.29 × 20,281.77
  4. Step 4: Simplify right side
    30,350.85x = 849,183,309.84
  5. Step 5: Solve for x
    x = 849,183,309.84/30,350.85
  6. Step 6: Final answer
    x = 27,978.90

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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.