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Finding the Fourth Proportional to 17,980.88, 26,946.69 and 11,411.68

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Solution

The fourth proportional to 17,980.88, 26,946.69 and 11,411.68 is: 17,101.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.88 : 26,946.69 = 11,411.68 : x
  2. Step 2: Convert to fraction form
    17,980.88/26,946.69 = 11,411.68/x
  3. Step 3: Cross multiply
    17,980.88x = 26,946.69 × 11,411.68
  4. Step 4: Simplify right side
    17,980.88x = 307,506,868.61
  5. Step 5: Solve for x
    x = 307,506,868.61/17,980.88
  6. Step 6: Final answer
    x = 17,101.88

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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.