Home / 15,125.59-20,855.23-9,818.47

Finding the Fourth Proportional to 15,125.59, 20,855.23 and 9,818.47

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Solution

The fourth proportional to 15,125.59, 20,855.23 and 9,818.47 is: 13,537.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125.59 : 20,855.23 = 9,818.47 : x
  2. Step 2: Convert to fraction form
    15,125.59/20,855.23 = 9,818.47/x
  3. Step 3: Cross multiply
    15,125.59x = 20,855.23 × 9,818.47
  4. Step 4: Simplify right side
    15,125.59x = 204,766,450.10
  5. Step 5: Solve for x
    x = 204,766,450.10/15,125.59
  6. Step 6: Final answer
    x = 13,537.75

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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.