Home / 11,326.15-15,643.20-7,543.10

Finding the Fourth Proportional to 11,326.15, 15,643.20 and 7,543.10

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Solution

The fourth proportional to 11,326.15, 15,643.20 and 7,543.10 is: 10,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,326.15 : 15,643.20 = 7,543.10 : x
  2. Step 2: Convert to fraction form
    11,326.15/15,643.20 = 7,543.10/x
  3. Step 3: Cross multiply
    11,326.15x = 15,643.20 × 7,543.10
  4. Step 4: Simplify right side
    11,326.15x = 117,998,224.10
  5. Step 5: Solve for x
    x = 117,998,224.10/11,326.15
  6. Step 6: Final answer
    x = 10,418.21

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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.