Home / 11,242.59-15,500.36-9,218.55

Finding the Fourth Proportional to 11,242.59, 15,500.36 and 9,218.55

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Solution

The fourth proportional to 11,242.59, 15,500.36 and 9,218.55 is: 12,709.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,242.59 : 15,500.36 = 9,218.55 : x
  2. Step 2: Convert to fraction form
    11,242.59/15,500.36 = 9,218.55/x
  3. Step 3: Cross multiply
    11,242.59x = 15,500.36 × 9,218.55
  4. Step 4: Simplify right side
    11,242.59x = 142,890,814.87
  5. Step 5: Solve for x
    x = 142,890,814.87/11,242.59
  6. Step 6: Final answer
    x = 12,709.77

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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.