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Finding the Fourth Proportional to 9,908.36, 14,876.70 and 8,690.48

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Solution

The fourth proportional to 9,908.36, 14,876.70 and 8,690.48 is: 13,048.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,908.36 : 14,876.70 = 8,690.48 : x
  2. Step 2: Convert to fraction form
    9,908.36/14,876.70 = 8,690.48/x
  3. Step 3: Cross multiply
    9,908.36x = 14,876.70 × 8,690.48
  4. Step 4: Simplify right side
    9,908.36x = 129,285,663.82
  5. Step 5: Solve for x
    x = 129,285,663.82/9,908.36
  6. Step 6: Final answer
    x = 13,048.14

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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.