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Finding the Fourth Proportional to 12,612.88, 17,404.96 and 7,307.28

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Solution

The fourth proportional to 12,612.88, 17,404.96 and 7,307.28 is: 10,083.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.88 : 17,404.96 = 7,307.28 : x
  2. Step 2: Convert to fraction form
    12,612.88/17,404.96 = 7,307.28/x
  3. Step 3: Cross multiply
    12,612.88x = 17,404.96 × 7,307.28
  4. Step 4: Simplify right side
    12,612.88x = 127,182,916.11
  5. Step 5: Solve for x
    x = 127,182,916.11/12,612.88
  6. Step 6: Final answer
    x = 10,083.57

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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.