Home / 11,388.90-17,088.29-6,117.76

Finding the Fourth Proportional to 11,388.90, 17,088.29 and 6,117.76

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Solution

The fourth proportional to 11,388.90, 17,088.29 and 6,117.76 is: 9,179.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,388.90 : 17,088.29 = 6,117.76 : x
  2. Step 2: Convert to fraction form
    11,388.90/17,088.29 = 6,117.76/x
  3. Step 3: Cross multiply
    11,388.90x = 17,088.29 × 6,117.76
  4. Step 4: Simplify right side
    11,388.90x = 104,541,983.72
  5. Step 5: Solve for x
    x = 104,541,983.72/11,388.90
  6. Step 6: Final answer
    x = 9,179.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.