Home / 21,226.55-31,853.64-8,079.04

Finding the Fourth Proportional to 21,226.55, 31,853.64 and 8,079.04

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Solution

The fourth proportional to 21,226.55, 31,853.64 and 8,079.04 is: 12,123.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.55 : 31,853.64 = 8,079.04 : x
  2. Step 2: Convert to fraction form
    21,226.55/31,853.64 = 8,079.04/x
  3. Step 3: Cross multiply
    21,226.55x = 31,853.64 × 8,079.04
  4. Step 4: Simplify right side
    21,226.55x = 257,346,831.71
  5. Step 5: Solve for x
    x = 257,346,831.71/21,226.55
  6. Step 6: Final answer
    x = 12,123.82

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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.