Home / 28,491.48-39,317.26-15,743.92

Finding the Fourth Proportional to 28,491.48, 39,317.26 and 15,743.92

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Solution

The fourth proportional to 28,491.48, 39,317.26 and 15,743.92 is: 21,726.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,491.48 : 39,317.26 = 15,743.92 : x
  2. Step 2: Convert to fraction form
    28,491.48/39,317.26 = 15,743.92/x
  3. Step 3: Cross multiply
    28,491.48x = 39,317.26 × 15,743.92
  4. Step 4: Simplify right side
    28,491.48x = 619,007,796.06
  5. Step 5: Solve for x
    x = 619,007,796.06/28,491.48
  6. Step 6: Final answer
    x = 21,726.07

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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.