Home / 31,734.15-43,780.80-20,402.07

Finding the Fourth Proportional to 31,734.15, 43,780.80 and 20,402.07

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Solution

The fourth proportional to 31,734.15, 43,780.80 and 20,402.07 is: 28,146.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,734.15 : 43,780.80 = 20,402.07 : x
  2. Step 2: Convert to fraction form
    31,734.15/43,780.80 = 20,402.07/x
  3. Step 3: Cross multiply
    31,734.15x = 43,780.80 × 20,402.07
  4. Step 4: Simplify right side
    31,734.15x = 893,218,946.26
  5. Step 5: Solve for x
    x = 893,218,946.26/31,734.15
  6. Step 6: Final answer
    x = 28,146.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.