Home / 23,156.78-31,957.60-13,085.65

Finding the Fourth Proportional to 23,156.78, 31,957.60 and 13,085.65

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Solution

The fourth proportional to 23,156.78, 31,957.60 and 13,085.65 is: 18,058.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,156.78 : 31,957.60 = 13,085.65 : x
  2. Step 2: Convert to fraction form
    23,156.78/31,957.60 = 13,085.65/x
  3. Step 3: Cross multiply
    23,156.78x = 31,957.60 × 13,085.65
  4. Step 4: Simplify right side
    23,156.78x = 418,185,808.65
  5. Step 5: Solve for x
    x = 418,185,808.65/23,156.78
  6. Step 6: Final answer
    x = 18,058.89

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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.