Home / 31,180.36-46,785-13,647.88

Finding the Fourth Proportional to 31,180.36, 46,785 and 13,647.88

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Solution

The fourth proportional to 31,180.36, 46,785 and 13,647.88 is: 20,478.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,180.36 : 46,785 = 13,647.88 : x
  2. Step 2: Convert to fraction form
    31,180.36/46,785 = 13,647.88/x
  3. Step 3: Cross multiply
    31,180.36x = 46,785 × 13,647.88
  4. Step 4: Simplify right side
    31,180.36x = 638,516,065.80
  5. Step 5: Solve for x
    x = 638,516,065.80/31,180.36
  6. Step 6: Final answer
    x = 20,478.15

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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.