Home / 28,272.56-39,017.22-15,699.68

Finding the Fourth Proportional to 28,272.56, 39,017.22 and 15,699.68

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Solution

The fourth proportional to 28,272.56, 39,017.22 and 15,699.68 is: 21,666.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.56 : 39,017.22 = 15,699.68 : x
  2. Step 2: Convert to fraction form
    28,272.56/39,017.22 = 15,699.68/x
  3. Step 3: Cross multiply
    28,272.56x = 39,017.22 × 15,699.68
  4. Step 4: Simplify right side
    28,272.56x = 612,557,868.49
  5. Step 5: Solve for x
    x = 612,557,868.49/28,272.56
  6. Step 6: Final answer
    x = 21,666.16

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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.