Home / 23,178.65-31,988.30-13,107.29

Finding the Fourth Proportional to 23,178.65, 31,988.30 and 13,107.29

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Solution

The fourth proportional to 23,178.65, 31,988.30 and 13,107.29 is: 18,089.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,178.65 : 31,988.30 = 13,107.29 : x
  2. Step 2: Convert to fraction form
    23,178.65/31,988.30 = 13,107.29/x
  3. Step 3: Cross multiply
    23,178.65x = 31,988.30 × 13,107.29
  4. Step 4: Simplify right side
    23,178.65x = 419,279,699.23
  5. Step 5: Solve for x
    x = 419,279,699.23/23,178.65
  6. Step 6: Final answer
    x = 18,089.05

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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.