Home / 31,849.68-47,784.16-12,864.56

Finding the Fourth Proportional to 31,849.68, 47,784.16 and 12,864.56

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Solution

The fourth proportional to 31,849.68, 47,784.16 and 12,864.56 is: 19,300.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,849.68 : 47,784.16 = 12,864.56 : x
  2. Step 2: Convert to fraction form
    31,849.68/47,784.16 = 12,864.56/x
  3. Step 3: Cross multiply
    31,849.68x = 47,784.16 × 12,864.56
  4. Step 4: Simplify right side
    31,849.68x = 614,722,193.37
  5. Step 5: Solve for x
    x = 614,722,193.37/31,849.68
  6. Step 6: Final answer
    x = 19,300.73

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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.