Home / 11,111.42-15,335.62-6,394.70

Finding the Fourth Proportional to 11,111.42, 15,335.62 and 6,394.70

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Solution

The fourth proportional to 11,111.42, 15,335.62 and 6,394.70 is: 8,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,111.42 : 15,335.62 = 6,394.70 : x
  2. Step 2: Convert to fraction form
    11,111.42/15,335.62 = 6,394.70/x
  3. Step 3: Cross multiply
    11,111.42x = 15,335.62 × 6,394.70
  4. Step 4: Simplify right side
    11,111.42x = 98,066,689.21
  5. Step 5: Solve for x
    x = 98,066,689.21/11,111.42
  6. Step 6: Final answer
    x = 8,825.76

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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.