Home / 11,385.23-15,708.87-6,908.09

Finding the Fourth Proportional to 11,385.23, 15,708.87 and 6,908.09

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Solution

The fourth proportional to 11,385.23, 15,708.87 and 6,908.09 is: 9,531.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.23 : 15,708.87 = 6,908.09 : x
  2. Step 2: Convert to fraction form
    11,385.23/15,708.87 = 6,908.09/x
  3. Step 3: Cross multiply
    11,385.23x = 15,708.87 × 6,908.09
  4. Step 4: Simplify right side
    11,385.23x = 108,518,209.21
  5. Step 5: Solve for x
    x = 108,518,209.21/11,385.23
  6. Step 6: Final answer
    x = 9,531.49

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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.