Home / 31,409.60-47,085.12-10,618.56

Finding the Fourth Proportional to 31,409.60, 47,085.12 and 10,618.56

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Solution

The fourth proportional to 31,409.60, 47,085.12 and 10,618.56 is: 15,917.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.60 : 47,085.12 = 10,618.56 : x
  2. Step 2: Convert to fraction form
    31,409.60/47,085.12 = 10,618.56/x
  3. Step 3: Cross multiply
    31,409.60x = 47,085.12 × 10,618.56
  4. Step 4: Simplify right side
    31,409.60x = 499,976,171.83
  5. Step 5: Solve for x
    x = 499,976,171.83/31,409.60
  6. Step 6: Final answer
    x = 15,917.94

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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.