Home / 11,001.88-15,188.43-8,478.46

Finding the Fourth Proportional to 11,001.88, 15,188.43 and 8,478.46

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Solution

The fourth proportional to 11,001.88, 15,188.43 and 8,478.46 is: 11,704.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,001.88 : 15,188.43 = 8,478.46 : x
  2. Step 2: Convert to fraction form
    11,001.88/15,188.43 = 8,478.46/x
  3. Step 3: Cross multiply
    11,001.88x = 15,188.43 × 8,478.46
  4. Step 4: Simplify right side
    11,001.88x = 128,774,496.22
  5. Step 5: Solve for x
    x = 128,774,496.22/11,001.88
  6. Step 6: Final answer
    x = 11,704.77

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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.