Home / 21,009.92-31,514.88-12,244.80

Finding the Fourth Proportional to 21,009.92, 31,514.88 and 12,244.80

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Solution

The fourth proportional to 21,009.92, 31,514.88 and 12,244.80 is: 18,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.92 : 31,514.88 = 12,244.80 : x
  2. Step 2: Convert to fraction form
    21,009.92/31,514.88 = 12,244.80/x
  3. Step 3: Cross multiply
    21,009.92x = 31,514.88 × 12,244.80
  4. Step 4: Simplify right side
    21,009.92x = 385,893,402.62
  5. Step 5: Solve for x
    x = 385,893,402.62/21,009.92
  6. Step 6: Final answer
    x = 18,367.20

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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.