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Finding the Fourth Proportional to 8,673.12, 13,031.07 and 5,554.47

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Solution

The fourth proportional to 8,673.12, 13,031.07 and 5,554.47 is: 8,345.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.12 : 13,031.07 = 5,554.47 : x
  2. Step 2: Convert to fraction form
    8,673.12/13,031.07 = 5,554.47/x
  3. Step 3: Cross multiply
    8,673.12x = 13,031.07 × 5,554.47
  4. Step 4: Simplify right side
    8,673.12x = 72,380,687.38
  5. Step 5: Solve for x
    x = 72,380,687.38/8,673.12
  6. Step 6: Final answer
    x = 8,345.40

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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.