Home / 39,713.99-54,806.76-21,810.65

Finding the Fourth Proportional to 39,713.99, 54,806.76 and 21,810.65

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Solution

The fourth proportional to 39,713.99, 54,806.76 and 21,810.65 is: 30,099.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,713.99 : 54,806.76 = 21,810.65 : x
  2. Step 2: Convert to fraction form
    39,713.99/54,806.76 = 21,810.65/x
  3. Step 3: Cross multiply
    39,713.99x = 54,806.76 × 21,810.65
  4. Step 4: Simplify right side
    39,713.99x = 1,195,370,785.96
  5. Step 5: Solve for x
    x = 1,195,370,785.96/39,713.99
  6. Step 6: Final answer
    x = 30,099.49

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.