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Finding the Fourth Proportional to 17,991.18, 26,980.28 and 7,603.74

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Solution

The fourth proportional to 17,991.18, 26,980.28 and 7,603.74 is: 11,402.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.18 : 26,980.28 = 7,603.74 : x
  2. Step 2: Convert to fraction form
    17,991.18/26,980.28 = 7,603.74/x
  3. Step 3: Cross multiply
    17,991.18x = 26,980.28 × 7,603.74
  4. Step 4: Simplify right side
    17,991.18x = 205,151,034.25
  5. Step 5: Solve for x
    x = 205,151,034.25/17,991.18
  6. Step 6: Final answer
    x = 11,402.87

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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.