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Finding the Fourth Proportional to 12,672.19, 17,488.43 and 7,296.45

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Solution

The fourth proportional to 12,672.19, 17,488.43 and 7,296.45 is: 10,069.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.19 : 17,488.43 = 7,296.45 : x
  2. Step 2: Convert to fraction form
    12,672.19/17,488.43 = 7,296.45/x
  3. Step 3: Cross multiply
    12,672.19x = 17,488.43 × 7,296.45
  4. Step 4: Simplify right side
    12,672.19x = 127,603,455.07
  5. Step 5: Solve for x
    x = 127,603,455.07/12,672.19
  6. Step 6: Final answer
    x = 10,069.57

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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.