Home / 28,498.08-39,327.20-15,922.72

Finding the Fourth Proportional to 28,498.08, 39,327.20 and 15,922.72

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Solution

The fourth proportional to 28,498.08, 39,327.20 and 15,922.72 is: 21,973.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,498.08 : 39,327.20 = 15,922.72 : x
  2. Step 2: Convert to fraction form
    28,498.08/39,327.20 = 15,922.72/x
  3. Step 3: Cross multiply
    28,498.08x = 39,327.20 × 15,922.72
  4. Step 4: Simplify right side
    28,498.08x = 626,195,993.98
  5. Step 5: Solve for x
    x = 626,195,993.98/28,498.08
  6. Step 6: Final answer
    x = 21,973.27

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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.