Home / 31,814.07-47,720.61-7,798.61

Finding the Fourth Proportional to 31,814.07, 47,720.61 and 7,798.61

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Solution

The fourth proportional to 31,814.07, 47,720.61 and 7,798.61 is: 11,697.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,814.07 : 47,720.61 = 7,798.61 : x
  2. Step 2: Convert to fraction form
    31,814.07/47,720.61 = 7,798.61/x
  3. Step 3: Cross multiply
    31,814.07x = 47,720.61 × 7,798.61
  4. Step 4: Simplify right side
    31,814.07x = 372,154,187.75
  5. Step 5: Solve for x
    x = 372,154,187.75/31,814.07
  6. Step 6: Final answer
    x = 11,697.79

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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.