Home / 10,238.61-15,337.55-7,890.44

Finding the Fourth Proportional to 10,238.61, 15,337.55 and 7,890.44

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Solution

The fourth proportional to 10,238.61, 15,337.55 and 7,890.44 is: 11,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,238.61 : 15,337.55 = 7,890.44 : x
  2. Step 2: Convert to fraction form
    10,238.61/15,337.55 = 7,890.44/x
  3. Step 3: Cross multiply
    10,238.61x = 15,337.55 × 7,890.44
  4. Step 4: Simplify right side
    10,238.61x = 121,020,076.09
  5. Step 5: Solve for x
    x = 121,020,076.09/10,238.61
  6. Step 6: Final answer
    x = 11,819.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.