Home / 31,827.60-47,741.40-8,135.10

Finding the Fourth Proportional to 31,827.60, 47,741.40 and 8,135.10

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Solution

The fourth proportional to 31,827.60, 47,741.40 and 8,135.10 is: 12,202.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,827.60 : 47,741.40 = 8,135.10 : x
  2. Step 2: Convert to fraction form
    31,827.60/47,741.40 = 8,135.10/x
  3. Step 3: Cross multiply
    31,827.60x = 47,741.40 × 8,135.10
  4. Step 4: Simplify right side
    31,827.60x = 388,381,063.14
  5. Step 5: Solve for x
    x = 388,381,063.14/31,827.60
  6. Step 6: Final answer
    x = 12,202.65

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1.5x scale

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.