Home / 21,173.40-31,765.90-17,214.81

Finding the Fourth Proportional to 21,173.40, 31,765.90 and 17,214.81

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Solution

The fourth proportional to 21,173.40, 31,765.90 and 17,214.81 is: 25,826.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.40 : 31,765.90 = 17,214.81 : x
  2. Step 2: Convert to fraction form
    21,173.40/31,765.90 = 17,214.81/x
  3. Step 3: Cross multiply
    21,173.40x = 31,765.90 × 17,214.81
  4. Step 4: Simplify right side
    21,173.40x = 546,843,932.98
  5. Step 5: Solve for x
    x = 546,843,932.98/21,173.40
  6. Step 6: Final answer
    x = 25,826.93

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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.