Home / 31,488.12-47,261.34-15,916.68

Finding the Fourth Proportional to 31,488.12, 47,261.34 and 15,916.68

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Solution

The fourth proportional to 31,488.12, 47,261.34 and 15,916.68 is: 23,889.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,488.12 : 47,261.34 = 15,916.68 : x
  2. Step 2: Convert to fraction form
    31,488.12/47,261.34 = 15,916.68/x
  3. Step 3: Cross multiply
    31,488.12x = 47,261.34 × 15,916.68
  4. Step 4: Simplify right side
    31,488.12x = 752,243,625.15
  5. Step 5: Solve for x
    x = 752,243,625.15/31,488.12
  6. Step 6: Final answer
    x = 23,889.76

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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.