Home / 20,823.48-28,737.18-11,870.75

Finding the Fourth Proportional to 20,823.48, 28,737.18 and 11,870.75

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Solution

The fourth proportional to 20,823.48, 28,737.18 and 11,870.75 is: 16,382.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.48 : 28,737.18 = 11,870.75 : x
  2. Step 2: Convert to fraction form
    20,823.48/28,737.18 = 11,870.75/x
  3. Step 3: Cross multiply
    20,823.48x = 28,737.18 × 11,870.75
  4. Step 4: Simplify right side
    20,823.48x = 341,131,951.33
  5. Step 5: Solve for x
    x = 341,131,951.33/20,823.48
  6. Step 6: Final answer
    x = 16,382.08

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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.