Home / 28,855.17-43,278.41-9,131.16

Finding the Fourth Proportional to 28,855.17, 43,278.41 and 9,131.16

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Solution

The fourth proportional to 28,855.17, 43,278.41 and 9,131.16 is: 13,695.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.17 : 43,278.41 = 9,131.16 : x
  2. Step 2: Convert to fraction form
    28,855.17/43,278.41 = 9,131.16/x
  3. Step 3: Cross multiply
    28,855.17x = 43,278.41 × 9,131.16
  4. Step 4: Simplify right side
    28,855.17x = 395,182,040.60
  5. Step 5: Solve for x
    x = 395,182,040.60/28,855.17
  6. Step 6: Final answer
    x = 13,695.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.