Home / 21,161.79-31,747.28-6,369.57

Finding the Fourth Proportional to 21,161.79, 31,747.28 and 6,369.57

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Solution

The fourth proportional to 21,161.79, 31,747.28 and 6,369.57 is: 9,555.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.79 : 31,747.28 = 6,369.57 : x
  2. Step 2: Convert to fraction form
    21,161.79/31,747.28 = 6,369.57/x
  3. Step 3: Cross multiply
    21,161.79x = 31,747.28 × 6,369.57
  4. Step 4: Simplify right side
    21,161.79x = 202,216,490.42
  5. Step 5: Solve for x
    x = 202,216,490.42/21,161.79
  6. Step 6: Final answer
    x = 9,555.74

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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.