Home / 11,187.40-15,435.86-6,711.48

Finding the Fourth Proportional to 11,187.40, 15,435.86 and 6,711.48

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Solution

The fourth proportional to 11,187.40, 15,435.86 and 6,711.48 is: 9,260.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.40 : 15,435.86 = 6,711.48 : x
  2. Step 2: Convert to fraction form
    11,187.40/15,435.86 = 6,711.48/x
  3. Step 3: Cross multiply
    11,187.40x = 15,435.86 × 6,711.48
  4. Step 4: Simplify right side
    11,187.40x = 103,597,465.67
  5. Step 5: Solve for x
    x = 103,597,465.67/11,187.40
  6. Step 6: Final answer
    x = 9,260.19

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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.