Home / 31,481.29-47,210.91-9,288.76

Finding the Fourth Proportional to 31,481.29, 47,210.91 and 9,288.76

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Solution

The fourth proportional to 31,481.29, 47,210.91 and 9,288.76 is: 13,929.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,481.29 : 47,210.91 = 9,288.76 : x
  2. Step 2: Convert to fraction form
    31,481.29/47,210.91 = 9,288.76/x
  3. Step 3: Cross multiply
    31,481.29x = 47,210.91 × 9,288.76
  4. Step 4: Simplify right side
    31,481.29x = 438,530,812.37
  5. Step 5: Solve for x
    x = 438,530,812.37/31,481.29
  6. Step 6: Final answer
    x = 13,929.89

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1.5x scale

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.