Home / 28,062.56-38,726-15,487.04

Finding the Fourth Proportional to 28,062.56, 38,726 and 15,487.04

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Solution

The fourth proportional to 28,062.56, 38,726 and 15,487.04 is: 21,371.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.56 : 38,726 = 15,487.04 : x
  2. Step 2: Convert to fraction form
    28,062.56/38,726 = 15,487.04/x
  3. Step 3: Cross multiply
    28,062.56x = 38,726 × 15,487.04
  4. Step 4: Simplify right side
    28,062.56x = 599,751,111.04
  5. Step 5: Solve for x
    x = 599,751,111.04/28,062.56
  6. Step 6: Final answer
    x = 21,371.93

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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.