Home / 11,005.88-15,188.16-6,290.32

Finding the Fourth Proportional to 11,005.88, 15,188.16 and 6,290.32

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Solution

The fourth proportional to 11,005.88, 15,188.16 and 6,290.32 is: 8,680.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.88 : 15,188.16 = 6,290.32 : x
  2. Step 2: Convert to fraction form
    11,005.88/15,188.16 = 6,290.32/x
  3. Step 3: Cross multiply
    11,005.88x = 15,188.16 × 6,290.32
  4. Step 4: Simplify right side
    11,005.88x = 95,538,386.61
  5. Step 5: Solve for x
    x = 95,538,386.61/11,005.88
  6. Step 6: Final answer
    x = 8,680.67

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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.