Home / 28,726.43-39,643.16-15,980.49

Finding the Fourth Proportional to 28,726.43, 39,643.16 and 15,980.49

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Solution

The fourth proportional to 28,726.43, 39,643.16 and 15,980.49 is: 22,053.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,726.43 : 39,643.16 = 15,980.49 : x
  2. Step 2: Convert to fraction form
    28,726.43/39,643.16 = 15,980.49/x
  3. Step 3: Cross multiply
    28,726.43x = 39,643.16 × 15,980.49
  4. Step 4: Simplify right side
    28,726.43x = 633,517,042.05
  5. Step 5: Solve for x
    x = 633,517,042.05/28,726.43
  6. Step 6: Final answer
    x = 22,053.46

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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.