Home / 15,205.02-20,992.80-13,608.91

Finding the Fourth Proportional to 15,205.02, 20,992.80 and 13,608.91

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Solution

The fourth proportional to 15,205.02, 20,992.80 and 13,608.91 is: 18,789.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,205.02 : 20,992.80 = 13,608.91 : x
  2. Step 2: Convert to fraction form
    15,205.02/20,992.80 = 13,608.91/x
  3. Step 3: Cross multiply
    15,205.02x = 20,992.80 × 13,608.91
  4. Step 4: Simplify right side
    15,205.02x = 285,689,085.04
  5. Step 5: Solve for x
    x = 285,689,085.04/15,205.02
  6. Step 6: Final answer
    x = 18,789.13

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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.