Home / 28,489.59-39,315.42-15,743.63

Finding the Fourth Proportional to 28,489.59, 39,315.42 and 15,743.63

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Solution

The fourth proportional to 28,489.59, 39,315.42 and 15,743.63 is: 21,726.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.59 : 39,315.42 = 15,743.63 : x
  2. Step 2: Convert to fraction form
    28,489.59/39,315.42 = 15,743.63/x
  3. Step 3: Cross multiply
    28,489.59x = 39,315.42 × 15,743.63
  4. Step 4: Simplify right side
    28,489.59x = 618,967,524.06
  5. Step 5: Solve for x
    x = 618,967,524.06/28,489.59
  6. Step 6: Final answer
    x = 21,726.09

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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.