Home / 36,712.80-55,069.20-21,117.60

Finding the Fourth Proportional to 36,712.80, 55,069.20 and 21,117.60

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Solution

The fourth proportional to 36,712.80, 55,069.20 and 21,117.60 is: 31,676.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,712.80 : 55,069.20 = 21,117.60 : x
  2. Step 2: Convert to fraction form
    36,712.80/55,069.20 = 21,117.60/x
  3. Step 3: Cross multiply
    36,712.80x = 55,069.20 × 21,117.60
  4. Step 4: Simplify right side
    36,712.80x = 1,162,929,337.92
  5. Step 5: Solve for x
    x = 1,162,929,337.92/36,712.80
  6. Step 6: Final answer
    x = 31,676.40

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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.