Home / 15,320.54-21,150.40-10,311.09

Finding the Fourth Proportional to 15,320.54, 21,150.40 and 10,311.09

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Solution

The fourth proportional to 15,320.54, 21,150.40 and 10,311.09 is: 14,234.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.54 : 21,150.40 = 10,311.09 : x
  2. Step 2: Convert to fraction form
    15,320.54/21,150.40 = 10,311.09/x
  3. Step 3: Cross multiply
    15,320.54x = 21,150.40 × 10,311.09
  4. Step 4: Simplify right side
    15,320.54x = 218,083,677.94
  5. Step 5: Solve for x
    x = 218,083,677.94/15,320.54
  6. Step 6: Final answer
    x = 14,234.73

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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.