Home / 31,820.16-47,723.04-12,091.68

Finding the Fourth Proportional to 31,820.16, 47,723.04 and 12,091.68

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Solution

The fourth proportional to 31,820.16, 47,723.04 and 12,091.68 is: 18,134.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,820.16 : 47,723.04 = 12,091.68 : x
  2. Step 2: Convert to fraction form
    31,820.16/47,723.04 = 12,091.68/x
  3. Step 3: Cross multiply
    31,820.16x = 47,723.04 × 12,091.68
  4. Step 4: Simplify right side
    31,820.16x = 577,051,728.31
  5. Step 5: Solve for x
    x = 577,051,728.31/31,820.16
  6. Step 6: Final answer
    x = 18,134.78

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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.