Home / 20,275.12-30,413.40-6,423.76

Finding the Fourth Proportional to 20,275.12, 30,413.40 and 6,423.76

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Solution

The fourth proportional to 20,275.12, 30,413.40 and 6,423.76 is: 9,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.12 : 30,413.40 = 6,423.76 : x
  2. Step 2: Convert to fraction form
    20,275.12/30,413.40 = 6,423.76/x
  3. Step 3: Cross multiply
    20,275.12x = 30,413.40 × 6,423.76
  4. Step 4: Simplify right side
    20,275.12x = 195,368,382.38
  5. Step 5: Solve for x
    x = 195,368,382.38/20,275.12
  6. Step 6: Final answer
    x = 9,635.87

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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.