Home / 11,278.16-15,568.66-7,031.36

Finding the Fourth Proportional to 11,278.16, 15,568.66 and 7,031.36

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Solution

The fourth proportional to 11,278.16, 15,568.66 and 7,031.36 is: 9,706.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.16 : 15,568.66 = 7,031.36 : x
  2. Step 2: Convert to fraction form
    11,278.16/15,568.66 = 7,031.36/x
  3. Step 3: Cross multiply
    11,278.16x = 15,568.66 × 7,031.36
  4. Step 4: Simplify right side
    11,278.16x = 109,468,853.18
  5. Step 5: Solve for x
    x = 109,468,853.18/11,278.16
  6. Step 6: Final answer
    x = 9,706.27

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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.