Home / 31,579.27-47,351.49-12,854.50

Finding the Fourth Proportional to 31,579.27, 47,351.49 and 12,854.50

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Solution

The fourth proportional to 31,579.27, 47,351.49 and 12,854.50 is: 19,274.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,579.27 : 47,351.49 = 12,854.50 : x
  2. Step 2: Convert to fraction form
    31,579.27/47,351.49 = 12,854.50/x
  3. Step 3: Cross multiply
    31,579.27x = 47,351.49 × 12,854.50
  4. Step 4: Simplify right side
    31,579.27x = 608,679,728.21
  5. Step 5: Solve for x
    x = 608,679,728.21/31,579.27
  6. Step 6: Final answer
    x = 19,274.66

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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.