Home / 21,994.20-32,979.15-8,831.70

Finding the Fourth Proportional to 21,994.20, 32,979.15 and 8,831.70

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Solution

The fourth proportional to 21,994.20, 32,979.15 and 8,831.70 is: 13,242.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.20 : 32,979.15 = 8,831.70 : x
  2. Step 2: Convert to fraction form
    21,994.20/32,979.15 = 8,831.70/x
  3. Step 3: Cross multiply
    21,994.20x = 32,979.15 × 8,831.70
  4. Step 4: Simplify right side
    21,994.20x = 291,261,959.06
  5. Step 5: Solve for x
    x = 291,261,959.06/21,994.20
  6. Step 6: Final answer
    x = 13,242.67

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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.