Home / 11,177.96-15,440.50-7,831.85

Finding the Fourth Proportional to 11,177.96, 15,440.50 and 7,831.85

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Solution

The fourth proportional to 11,177.96, 15,440.50 and 7,831.85 is: 10,818.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,177.96 : 15,440.50 = 7,831.85 : x
  2. Step 2: Convert to fraction form
    11,177.96/15,440.50 = 7,831.85/x
  3. Step 3: Cross multiply
    11,177.96x = 15,440.50 × 7,831.85
  4. Step 4: Simplify right side
    11,177.96x = 120,927,602.72
  5. Step 5: Solve for x
    x = 120,927,602.72/11,177.96
  6. Step 6: Final answer
    x = 10,818.40

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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.