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Finding the Fourth Proportional to 11,897.17, 17,812.90 and 8,966.59

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Solution

The fourth proportional to 11,897.17, 17,812.90 and 8,966.59 is: 13,425.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,897.17 : 17,812.90 = 8,966.59 : x
  2. Step 2: Convert to fraction form
    11,897.17/17,812.90 = 8,966.59/x
  3. Step 3: Cross multiply
    11,897.17x = 17,812.90 × 8,966.59
  4. Step 4: Simplify right side
    11,897.17x = 159,720,971.01
  5. Step 5: Solve for x
    x = 159,720,971.01/11,897.17
  6. Step 6: Final answer
    x = 13,425.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.