Home / 21,118.32-31,675.66-6,330.56

Finding the Fourth Proportional to 21,118.32, 31,675.66 and 6,330.56

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Solution

The fourth proportional to 21,118.32, 31,675.66 and 6,330.56 is: 9,495.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.32 : 31,675.66 = 6,330.56 : x
  2. Step 2: Convert to fraction form
    21,118.32/31,675.66 = 6,330.56/x
  3. Step 3: Cross multiply
    21,118.32x = 31,675.66 × 6,330.56
  4. Step 4: Simplify right side
    21,118.32x = 200,524,666.17
  5. Step 5: Solve for x
    x = 200,524,666.17/21,118.32
  6. Step 6: Final answer
    x = 9,495.29

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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.