Home / 15,139.20-22,708.52-6,813.32

Finding the Fourth Proportional to 15,139.20, 22,708.52 and 6,813.32

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Solution

The fourth proportional to 15,139.20, 22,708.52 and 6,813.32 is: 10,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.20 : 22,708.52 = 6,813.32 : x
  2. Step 2: Convert to fraction form
    15,139.20/22,708.52 = 6,813.32/x
  3. Step 3: Cross multiply
    15,139.20x = 22,708.52 × 6,813.32
  4. Step 4: Simplify right side
    15,139.20x = 154,720,413.49
  5. Step 5: Solve for x
    x = 154,720,413.49/15,139.20
  6. Step 6: Final answer
    x = 10,219.85

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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.