Home / 31,782.38-47,680.66-10,436.05

Finding the Fourth Proportional to 31,782.38, 47,680.66 and 10,436.05

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Solution

The fourth proportional to 31,782.38, 47,680.66 and 10,436.05 is: 15,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,782.38 : 47,680.66 = 10,436.05 : x
  2. Step 2: Convert to fraction form
    31,782.38/47,680.66 = 10,436.05/x
  3. Step 3: Cross multiply
    31,782.38x = 47,680.66 × 10,436.05
  4. Step 4: Simplify right side
    31,782.38x = 497,597,513.39
  5. Step 5: Solve for x
    x = 497,597,513.39/31,782.38
  6. Step 6: Final answer
    x = 15,656.40

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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.