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Finding the Fourth Proportional to 12,878.04, 17,773.92 and 7,289.04

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Solution

The fourth proportional to 12,878.04, 17,773.92 and 7,289.04 is: 10,060.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.04 : 17,773.92 = 7,289.04 : x
  2. Step 2: Convert to fraction form
    12,878.04/17,773.92 = 7,289.04/x
  3. Step 3: Cross multiply
    12,878.04x = 17,773.92 × 7,289.04
  4. Step 4: Simplify right side
    12,878.04x = 129,554,813.84
  5. Step 5: Solve for x
    x = 129,554,813.84/12,878.04
  6. Step 6: Final answer
    x = 10,060.13

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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.