Home / 12,554.40-18,831.72-3,789.38

Finding the Fourth Proportional to 12,554.40, 18,831.72 and 3,789.38

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Solution

The fourth proportional to 12,554.40, 18,831.72 and 3,789.38 is: 5,684.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,554.40 : 18,831.72 = 3,789.38 : x
  2. Step 2: Convert to fraction form
    12,554.40/18,831.72 = 3,789.38/x
  3. Step 3: Cross multiply
    12,554.40x = 18,831.72 × 3,789.38
  4. Step 4: Simplify right side
    12,554.40x = 71,360,543.13
  5. Step 5: Solve for x
    x = 71,360,543.13/12,554.40
  6. Step 6: Final answer
    x = 5,684.11

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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.