Home / 28,538.24-39,382.02-15,791.10

Finding the Fourth Proportional to 28,538.24, 39,382.02 and 15,791.10

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Solution

The fourth proportional to 28,538.24, 39,382.02 and 15,791.10 is: 21,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.24 : 39,382.02 = 15,791.10 : x
  2. Step 2: Convert to fraction form
    28,538.24/39,382.02 = 15,791.10/x
  3. Step 3: Cross multiply
    28,538.24x = 39,382.02 × 15,791.10
  4. Step 4: Simplify right side
    28,538.24x = 621,885,416.02
  5. Step 5: Solve for x
    x = 621,885,416.02/28,538.24
  6. Step 6: Final answer
    x = 21,791.30

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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.