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Finding the Fourth Proportional to 17,959.31, 26,953.01 and 12,451.45

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Solution

The fourth proportional to 17,959.31, 26,953.01 and 12,451.45 is: 18,686.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,959.31 : 26,953.01 = 12,451.45 : x
  2. Step 2: Convert to fraction form
    17,959.31/26,953.01 = 12,451.45/x
  3. Step 3: Cross multiply
    17,959.31x = 26,953.01 × 12,451.45
  4. Step 4: Simplify right side
    17,959.31x = 335,603,859.34
  5. Step 5: Solve for x
    x = 335,603,859.34/17,959.31
  6. Step 6: Final answer
    x = 18,686.90

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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.