Home / 31,486.97-47,221.68-10,428.65

Finding the Fourth Proportional to 31,486.97, 47,221.68 and 10,428.65

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Solution

The fourth proportional to 31,486.97, 47,221.68 and 10,428.65 is: 15,640.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,486.97 : 47,221.68 = 10,428.65 : x
  2. Step 2: Convert to fraction form
    31,486.97/47,221.68 = 10,428.65/x
  3. Step 3: Cross multiply
    31,486.97x = 47,221.68 × 10,428.65
  4. Step 4: Simplify right side
    31,486.97x = 492,458,491.19
  5. Step 5: Solve for x
    x = 492,458,491.19/31,486.97
  6. Step 6: Final answer
    x = 15,640.07

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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.