Home / 11,187.78-15,437.94-6,471.18

Finding the Fourth Proportional to 11,187.78, 15,437.94 and 6,471.18

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Solution

The fourth proportional to 11,187.78, 15,437.94 and 6,471.18 is: 8,929.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.78 : 15,437.94 = 6,471.18 : x
  2. Step 2: Convert to fraction form
    11,187.78/15,437.94 = 6,471.18/x
  3. Step 3: Cross multiply
    11,187.78x = 15,437.94 × 6,471.18
  4. Step 4: Simplify right side
    11,187.78x = 99,901,688.57
  5. Step 5: Solve for x
    x = 99,901,688.57/11,187.78
  6. Step 6: Final answer
    x = 8,929.54

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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.