Home / 11,176.88-15,424.16-6,140.32

Finding the Fourth Proportional to 11,176.88, 15,424.16 and 6,140.32

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Solution

The fourth proportional to 11,176.88, 15,424.16 and 6,140.32 is: 8,473.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,176.88 : 15,424.16 = 6,140.32 : x
  2. Step 2: Convert to fraction form
    11,176.88/15,424.16 = 6,140.32/x
  3. Step 3: Cross multiply
    11,176.88x = 15,424.16 × 6,140.32
  4. Step 4: Simplify right side
    11,176.88x = 94,709,278.13
  5. Step 5: Solve for x
    x = 94,709,278.13/11,176.88
  6. Step 6: Final answer
    x = 8,473.68

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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.