Home / 21,219.52-31,831.26-8,068.36

Finding the Fourth Proportional to 21,219.52, 31,831.26 and 8,068.36

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Solution

The fourth proportional to 21,219.52, 31,831.26 and 8,068.36 is: 12,103.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.52 : 31,831.26 = 8,068.36 : x
  2. Step 2: Convert to fraction form
    21,219.52/31,831.26 = 8,068.36/x
  3. Step 3: Cross multiply
    21,219.52x = 31,831.26 × 8,068.36
  4. Step 4: Simplify right side
    21,219.52x = 256,826,064.93
  5. Step 5: Solve for x
    x = 256,826,064.93/21,219.52
  6. Step 6: Final answer
    x = 12,103.29

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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.