Home / 11,089.30-15,303.38-6,615.64

Finding the Fourth Proportional to 11,089.30, 15,303.38 and 6,615.64

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Solution

The fourth proportional to 11,089.30, 15,303.38 and 6,615.64 is: 9,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,089.30 : 15,303.38 = 6,615.64 : x
  2. Step 2: Convert to fraction form
    11,089.30/15,303.38 = 6,615.64/x
  3. Step 3: Cross multiply
    11,089.30x = 15,303.38 × 6,615.64
  4. Step 4: Simplify right side
    11,089.30x = 101,241,652.86
  5. Step 5: Solve for x
    x = 101,241,652.86/11,089.30
  6. Step 6: Final answer
    x = 9,129.67

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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.