Home / 31,158.40-46,723.20-13,619.20

Finding the Fourth Proportional to 31,158.40, 46,723.20 and 13,619.20

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Solution

The fourth proportional to 31,158.40, 46,723.20 and 13,619.20 is: 20,422.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,158.40 : 46,723.20 = 13,619.20 : x
  2. Step 2: Convert to fraction form
    31,158.40/46,723.20 = 13,619.20/x
  3. Step 3: Cross multiply
    31,158.40x = 46,723.20 × 13,619.20
  4. Step 4: Simplify right side
    31,158.40x = 636,332,605.44
  5. Step 5: Solve for x
    x = 636,332,605.44/31,158.40
  6. Step 6: Final answer
    x = 20,422.51

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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.