Home / 31,529.66-47,231.10-15,686.87

Finding the Fourth Proportional to 31,529.66, 47,231.10 and 15,686.87

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Solution

The fourth proportional to 31,529.66, 47,231.10 and 15,686.87 is: 23,498.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,529.66 : 47,231.10 = 15,686.87 : x
  2. Step 2: Convert to fraction form
    31,529.66/47,231.10 = 15,686.87/x
  3. Step 3: Cross multiply
    31,529.66x = 47,231.10 × 15,686.87
  4. Step 4: Simplify right side
    31,529.66x = 740,907,889.50
  5. Step 5: Solve for x
    x = 740,907,889.50/31,529.66
  6. Step 6: Final answer
    x = 23,498.76

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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.