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Finding the Fourth Proportional to 9,108.61, 13,662.92 and 7,031.65

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Solution

The fourth proportional to 9,108.61, 13,662.92 and 7,031.65 is: 10,547.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.61 : 13,662.92 = 7,031.65 : x
  2. Step 2: Convert to fraction form
    9,108.61/13,662.92 = 7,031.65/x
  3. Step 3: Cross multiply
    9,108.61x = 13,662.92 × 7,031.65
  4. Step 4: Simplify right side
    9,108.61x = 96,072,880.46
  5. Step 5: Solve for x
    x = 96,072,880.46/9,108.61
  6. Step 6: Final answer
    x = 10,547.48

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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.