Home / 31,913.76-47,876.40-14,391.84

Finding the Fourth Proportional to 31,913.76, 47,876.40 and 14,391.84

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Solution

The fourth proportional to 31,913.76, 47,876.40 and 14,391.84 is: 21,590.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,913.76 : 47,876.40 = 14,391.84 : x
  2. Step 2: Convert to fraction form
    31,913.76/47,876.40 = 14,391.84/x
  3. Step 3: Cross multiply
    31,913.76x = 47,876.40 × 14,391.84
  4. Step 4: Simplify right side
    31,913.76x = 689,029,488.58
  5. Step 5: Solve for x
    x = 689,029,488.58/31,913.76
  6. Step 6: Final answer
    x = 21,590.36

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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.