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Finding the Fourth Proportional to 12,810.35, 17,658.08 and 9,619.04

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Solution

The fourth proportional to 12,810.35, 17,658.08 and 9,619.04 is: 13,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.35 : 17,658.08 = 9,619.04 : x
  2. Step 2: Convert to fraction form
    12,810.35/17,658.08 = 9,619.04/x
  3. Step 3: Cross multiply
    12,810.35x = 17,658.08 × 9,619.04
  4. Step 4: Simplify right side
    12,810.35x = 169,853,729.75
  5. Step 5: Solve for x
    x = 169,853,729.75/12,810.35
  6. Step 6: Final answer
    x = 13,259.10

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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.