Home / 11,384.55-15,715.67-6,909.75

Finding the Fourth Proportional to 11,384.55, 15,715.67 and 6,909.75

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Solution

The fourth proportional to 11,384.55, 15,715.67 and 6,909.75 is: 9,538.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,384.55 : 15,715.67 = 6,909.75 : x
  2. Step 2: Convert to fraction form
    11,384.55/15,715.67 = 6,909.75/x
  3. Step 3: Cross multiply
    11,384.55x = 15,715.67 × 6,909.75
  4. Step 4: Simplify right side
    11,384.55x = 108,591,316.23
  5. Step 5: Solve for x
    x = 108,591,316.23/11,384.55
  6. Step 6: Final answer
    x = 9,538.48

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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.