Home / 15,268.10-21,072.56-9,135.45

Finding the Fourth Proportional to 15,268.10, 21,072.56 and 9,135.45

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Solution

The fourth proportional to 15,268.10, 21,072.56 and 9,135.45 is: 12,608.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,268.10 : 21,072.56 = 9,135.45 : x
  2. Step 2: Convert to fraction form
    15,268.10/21,072.56 = 9,135.45/x
  3. Step 3: Cross multiply
    15,268.10x = 21,072.56 × 9,135.45
  4. Step 4: Simplify right side
    15,268.10x = 192,507,272.57
  5. Step 5: Solve for x
    x = 192,507,272.57/15,268.10
  6. Step 6: Final answer
    x = 12,608.47

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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.