Home / 21,017.57-31,535.69-11,019.92

Finding the Fourth Proportional to 21,017.57, 31,535.69 and 11,019.92

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Solution

The fourth proportional to 21,017.57, 31,535.69 and 11,019.92 is: 16,534.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.57 : 31,535.69 = 11,019.92 : x
  2. Step 2: Convert to fraction form
    21,017.57/31,535.69 = 11,019.92/x
  3. Step 3: Cross multiply
    21,017.57x = 31,535.69 × 11,019.92
  4. Step 4: Simplify right side
    21,017.57x = 347,520,568.17
  5. Step 5: Solve for x
    x = 347,520,568.17/21,017.57
  6. Step 6: Final answer
    x = 16,534.77

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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.