Home / 23,187.65-31,999.20-13,116.20

Finding the Fourth Proportional to 23,187.65, 31,999.20 and 13,116.20

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Solution

The fourth proportional to 23,187.65, 31,999.20 and 13,116.20 is: 18,100.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,187.65 : 31,999.20 = 13,116.20 : x
  2. Step 2: Convert to fraction form
    23,187.65/31,999.20 = 13,116.20/x
  3. Step 3: Cross multiply
    23,187.65x = 31,999.20 × 13,116.20
  4. Step 4: Simplify right side
    23,187.65x = 419,707,907.04
  5. Step 5: Solve for x
    x = 419,707,907.04/23,187.65
  6. Step 6: Final answer
    x = 18,100.49

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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.