Home / 31,795.91-47,684.70-12,820.55

Finding the Fourth Proportional to 31,795.91, 47,684.70 and 12,820.55

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Solution

The fourth proportional to 31,795.91, 47,684.70 and 12,820.55 is: 19,227.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,795.91 : 47,684.70 = 12,820.55 : x
  2. Step 2: Convert to fraction form
    31,795.91/47,684.70 = 12,820.55/x
  3. Step 3: Cross multiply
    31,795.91x = 47,684.70 × 12,820.55
  4. Step 4: Simplify right side
    31,795.91x = 611,343,842.16
  5. Step 5: Solve for x
    x = 611,343,842.16/31,795.91
  6. Step 6: Final answer
    x = 19,227.12

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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.