Home / 11,187.09-15,438.56-6,151.50

Finding the Fourth Proportional to 11,187.09, 15,438.56 and 6,151.50

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Solution

The fourth proportional to 11,187.09, 15,438.56 and 6,151.50 is: 8,489.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.09 : 15,438.56 = 6,151.50 : x
  2. Step 2: Convert to fraction form
    11,187.09/15,438.56 = 6,151.50/x
  3. Step 3: Cross multiply
    11,187.09x = 15,438.56 × 6,151.50
  4. Step 4: Simplify right side
    11,187.09x = 94,970,271.08
  5. Step 5: Solve for x
    x = 94,970,271.08/11,187.09
  6. Step 6: Final answer
    x = 8,489.27

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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.