Home / 21,143.70-31,716.54-17,439.03

Finding the Fourth Proportional to 21,143.70, 31,716.54 and 17,439.03

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Solution

The fourth proportional to 21,143.70, 31,716.54 and 17,439.03 is: 26,159.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143.70 : 31,716.54 = 17,439.03 : x
  2. Step 2: Convert to fraction form
    21,143.70/31,716.54 = 17,439.03/x
  3. Step 3: Cross multiply
    21,143.70x = 31,716.54 × 17,439.03
  4. Step 4: Simplify right side
    21,143.70x = 553,105,692.56
  5. Step 5: Solve for x
    x = 553,105,692.56/21,143.70
  6. Step 6: Final answer
    x = 26,159.36

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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.