Home / 21,979.39-32,970.60-8,831.77

Finding the Fourth Proportional to 21,979.39, 32,970.60 and 8,831.77

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Solution

The fourth proportional to 21,979.39, 32,970.60 and 8,831.77 is: 13,248.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.39 : 32,970.60 = 8,831.77 : x
  2. Step 2: Convert to fraction form
    21,979.39/32,970.60 = 8,831.77/x
  3. Step 3: Cross multiply
    21,979.39x = 32,970.60 × 8,831.77
  4. Step 4: Simplify right side
    21,979.39x = 291,188,755.96
  5. Step 5: Solve for x
    x = 291,188,755.96/21,979.39
  6. Step 6: Final answer
    x = 13,248.26

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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.