Home / 20,809.24-31,213.71-8,332.15

Finding the Fourth Proportional to 20,809.24, 31,213.71 and 8,332.15

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Solution

The fourth proportional to 20,809.24, 31,213.71 and 8,332.15 is: 12,498.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809.24 : 31,213.71 = 8,332.15 : x
  2. Step 2: Convert to fraction form
    20,809.24/31,213.71 = 8,332.15/x
  3. Step 3: Cross multiply
    20,809.24x = 31,213.71 × 8,332.15
  4. Step 4: Simplify right side
    20,809.24x = 260,077,313.78
  5. Step 5: Solve for x
    x = 260,077,313.78/20,809.24
  6. Step 6: Final answer
    x = 12,498.16

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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.