Home / 21,107.53-31,665.38-6,315.17

Finding the Fourth Proportional to 21,107.53, 31,665.38 and 6,315.17

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Solution

The fourth proportional to 21,107.53, 31,665.38 and 6,315.17 is: 9,473.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.53 : 31,665.38 = 6,315.17 : x
  2. Step 2: Convert to fraction form
    21,107.53/31,665.38 = 6,315.17/x
  3. Step 3: Cross multiply
    21,107.53x = 31,665.38 × 6,315.17
  4. Step 4: Simplify right side
    21,107.53x = 199,972,305.40
  5. Step 5: Solve for x
    x = 199,972,305.40/21,107.53
  6. Step 6: Final answer
    x = 9,473.98

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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.