Home / 18,663.90-27,963.45-12,086.70

Finding the Fourth Proportional to 18,663.90, 27,963.45 and 12,086.70

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Solution

The fourth proportional to 18,663.90, 27,963.45 and 12,086.70 is: 18,109.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.90 : 27,963.45 = 12,086.70 : x
  2. Step 2: Convert to fraction form
    18,663.90/27,963.45 = 12,086.70/x
  3. Step 3: Cross multiply
    18,663.90x = 27,963.45 × 12,086.70
  4. Step 4: Simplify right side
    18,663.90x = 337,985,831.12
  5. Step 5: Solve for x
    x = 337,985,831.12/18,663.90
  6. Step 6: Final answer
    x = 18,109.07

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1.5x scale

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.