Home / 15,020.51-20,726.49-8,305.23

Finding the Fourth Proportional to 15,020.51, 20,726.49 and 8,305.23

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Solution

The fourth proportional to 15,020.51, 20,726.49 and 8,305.23 is: 11,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.51 : 20,726.49 = 8,305.23 : x
  2. Step 2: Convert to fraction form
    15,020.51/20,726.49 = 8,305.23/x
  3. Step 3: Cross multiply
    15,020.51x = 20,726.49 × 8,305.23
  4. Step 4: Simplify right side
    15,020.51x = 172,138,266.54
  5. Step 5: Solve for x
    x = 172,138,266.54/15,020.51
  6. Step 6: Final answer
    x = 11,460.21

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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.