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Finding the Fourth Proportional to 12,972.54, 17,901.09 and 7,307.04

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Solution

The fourth proportional to 12,972.54, 17,901.09 and 7,307.04 is: 10,083.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.54 : 17,901.09 = 7,307.04 : x
  2. Step 2: Convert to fraction form
    12,972.54/17,901.09 = 7,307.04/x
  3. Step 3: Cross multiply
    12,972.54x = 17,901.09 × 7,307.04
  4. Step 4: Simplify right side
    12,972.54x = 130,803,980.67
  5. Step 5: Solve for x
    x = 130,803,980.67/12,972.54
  6. Step 6: Final answer
    x = 10,083.14

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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.