Home / 11,152.62-15,389.64-8,013.78

Finding the Fourth Proportional to 11,152.62, 15,389.64 and 8,013.78

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Solution

The fourth proportional to 11,152.62, 15,389.64 and 8,013.78 is: 11,058.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.62 : 15,389.64 = 8,013.78 : x
  2. Step 2: Convert to fraction form
    11,152.62/15,389.64 = 8,013.78/x
  3. Step 3: Cross multiply
    11,152.62x = 15,389.64 × 8,013.78
  4. Step 4: Simplify right side
    11,152.62x = 123,329,189.24
  5. Step 5: Solve for x
    x = 123,329,189.24/11,152.62
  6. Step 6: Final answer
    x = 11,058.32

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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.