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Finding the Fourth Proportional to 17,980.99, 26,899.21 and 15,541.99

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Solution

The fourth proportional to 17,980.99, 26,899.21 and 15,541.99 is: 23,250.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.99 : 26,899.21 = 15,541.99 : x
  2. Step 2: Convert to fraction form
    17,980.99/26,899.21 = 15,541.99/x
  3. Step 3: Cross multiply
    17,980.99x = 26,899.21 × 15,541.99
  4. Step 4: Simplify right side
    17,980.99x = 418,067,252.83
  5. Step 5: Solve for x
    x = 418,067,252.83/17,980.99
  6. Step 6: Final answer
    x = 23,250.51

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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.