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Finding the Fourth Proportional to 11,509.88, 15,883.62 and 6,474.10

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Solution

The fourth proportional to 11,509.88, 15,883.62 and 6,474.10 is: 8,934.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,509.88 : 15,883.62 = 6,474.10 : x
  2. Step 2: Convert to fraction form
    11,509.88/15,883.62 = 6,474.10/x
  3. Step 3: Cross multiply
    11,509.88x = 15,883.62 × 6,474.10
  4. Step 4: Simplify right side
    11,509.88x = 102,832,144.24
  5. Step 5: Solve for x
    x = 102,832,144.24/11,509.88
  6. Step 6: Final answer
    x = 8,934.25

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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.