Home / 28,281.24-39,031.20-18,081.72

Finding the Fourth Proportional to 28,281.24, 39,031.20 and 18,081.72

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Solution

The fourth proportional to 28,281.24, 39,031.20 and 18,081.72 is: 24,954.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.24 : 39,031.20 = 18,081.72 : x
  2. Step 2: Convert to fraction form
    28,281.24/39,031.20 = 18,081.72/x
  3. Step 3: Cross multiply
    28,281.24x = 39,031.20 × 18,081.72
  4. Step 4: Simplify right side
    28,281.24x = 705,751,229.66
  5. Step 5: Solve for x
    x = 705,751,229.66/28,281.24
  6. Step 6: Final answer
    x = 24,954.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.