Home / 11,231.78-15,501.29-9,340.11

Finding the Fourth Proportional to 11,231.78, 15,501.29 and 9,340.11

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Solution

The fourth proportional to 11,231.78, 15,501.29 and 9,340.11 is: 12,890.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,231.78 : 15,501.29 = 9,340.11 : x
  2. Step 2: Convert to fraction form
    11,231.78/15,501.29 = 9,340.11/x
  3. Step 3: Cross multiply
    11,231.78x = 15,501.29 × 9,340.11
  4. Step 4: Simplify right side
    11,231.78x = 144,783,753.74
  5. Step 5: Solve for x
    x = 144,783,753.74/11,231.78
  6. Step 6: Final answer
    x = 12,890.54

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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.