Home / 11,182.85-15,431.69-6,877.58

Finding the Fourth Proportional to 11,182.85, 15,431.69 and 6,877.58

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Solution

The fourth proportional to 11,182.85, 15,431.69 and 6,877.58 is: 9,490.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,182.85 : 15,431.69 = 6,877.58 : x
  2. Step 2: Convert to fraction form
    11,182.85/15,431.69 = 6,877.58/x
  3. Step 3: Cross multiply
    11,182.85x = 15,431.69 × 6,877.58
  4. Step 4: Simplify right side
    11,182.85x = 106,132,682.51
  5. Step 5: Solve for x
    x = 106,132,682.51/11,182.85
  6. Step 6: Final answer
    x = 9,490.66

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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.