Home / 23,177.78-31,987.18-13,108.34

Finding the Fourth Proportional to 23,177.78, 31,987.18 and 13,108.34

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Solution

The fourth proportional to 23,177.78, 31,987.18 and 13,108.34 is: 18,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,177.78 : 31,987.18 = 13,108.34 : x
  2. Step 2: Convert to fraction form
    23,177.78/31,987.18 = 13,108.34/x
  3. Step 3: Cross multiply
    23,177.78x = 31,987.18 × 13,108.34
  4. Step 4: Simplify right side
    23,177.78x = 419,298,831.08
  5. Step 5: Solve for x
    x = 419,298,831.08/23,177.78
  6. Step 6: Final answer
    x = 18,090.55

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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.