Home / 11,211.10-15,476.90-8,687.50

Finding the Fourth Proportional to 11,211.10, 15,476.90 and 8,687.50

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Solution

The fourth proportional to 11,211.10, 15,476.90 and 8,687.50 is: 11,993.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.10 : 15,476.90 = 8,687.50 : x
  2. Step 2: Convert to fraction form
    11,211.10/15,476.90 = 8,687.50/x
  3. Step 3: Cross multiply
    11,211.10x = 15,476.90 × 8,687.50
  4. Step 4: Simplify right side
    11,211.10x = 134,455,568.75
  5. Step 5: Solve for x
    x = 134,455,568.75/11,211.10
  6. Step 6: Final answer
    x = 11,993.08

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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.