Home / 15,013.75-20,717.18-8,298.47

Finding the Fourth Proportional to 15,013.75, 20,717.18 and 8,298.47

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Solution

The fourth proportional to 15,013.75, 20,717.18 and 8,298.47 is: 11,450.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,013.75 : 20,717.18 = 8,298.47 : x
  2. Step 2: Convert to fraction form
    15,013.75/20,717.18 = 8,298.47/x
  3. Step 3: Cross multiply
    15,013.75x = 20,717.18 × 8,298.47
  4. Step 4: Simplify right side
    15,013.75x = 171,920,896.71
  5. Step 5: Solve for x
    x = 171,920,896.71/15,013.75
  6. Step 6: Final answer
    x = 11,450.90

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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.