Home / 15,625.08-21,569.22-15,203.88

Finding the Fourth Proportional to 15,625.08, 21,569.22 and 15,203.88

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Solution

The fourth proportional to 15,625.08, 21,569.22 and 15,203.88 is: 20,987.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625.08 : 21,569.22 = 15,203.88 : x
  2. Step 2: Convert to fraction form
    15,625.08/21,569.22 = 15,203.88/x
  3. Step 3: Cross multiply
    15,625.08x = 21,569.22 × 15,203.88
  4. Step 4: Simplify right side
    15,625.08x = 327,935,832.57
  5. Step 5: Solve for x
    x = 327,935,832.57/15,625.08
  6. Step 6: Final answer
    x = 20,987.79

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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.