Home / 21,589.30-29,803.24-15,221.08

Finding the Fourth Proportional to 21,589.30, 29,803.24 and 15,221.08

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Solution

The fourth proportional to 21,589.30, 29,803.24 and 15,221.08 is: 21,012.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,589.30 : 29,803.24 = 15,221.08 : x
  2. Step 2: Convert to fraction form
    21,589.30/29,803.24 = 15,221.08/x
  3. Step 3: Cross multiply
    21,589.30x = 29,803.24 × 15,221.08
  4. Step 4: Simplify right side
    21,589.30x = 453,637,556.58
  5. Step 5: Solve for x
    x = 453,637,556.58/21,589.30
  6. Step 6: Final answer
    x = 21,012.15

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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.