Home / 20,934.19-31,407.27-8,447.77

Finding the Fourth Proportional to 20,934.19, 31,407.27 and 8,447.77

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Solution

The fourth proportional to 20,934.19, 31,407.27 and 8,447.77 is: 12,674.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.19 : 31,407.27 = 8,447.77 : x
  2. Step 2: Convert to fraction form
    20,934.19/31,407.27 = 8,447.77/x
  3. Step 3: Cross multiply
    20,934.19x = 31,407.27 × 8,447.77
  4. Step 4: Simplify right side
    20,934.19x = 265,321,393.29
  5. Step 5: Solve for x
    x = 265,321,393.29/20,934.19
  6. Step 6: Final answer
    x = 12,674.07

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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.