Home / 30,128.88-45,234.72-15,347.76

Finding the Fourth Proportional to 30,128.88, 45,234.72 and 15,347.76

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Solution

The fourth proportional to 30,128.88, 45,234.72 and 15,347.76 is: 23,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,128.88 : 45,234.72 = 15,347.76 : x
  2. Step 2: Convert to fraction form
    30,128.88/45,234.72 = 15,347.76/x
  3. Step 3: Cross multiply
    30,128.88x = 45,234.72 × 15,347.76
  4. Step 4: Simplify right side
    30,128.88x = 694,251,626.23
  5. Step 5: Solve for x
    x = 694,251,626.23/30,128.88
  6. Step 6: Final answer
    x = 23,042.73

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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.