Home / 21,299.31-31,953.66-6,509.39

Finding the Fourth Proportional to 21,299.31, 31,953.66 and 6,509.39

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Solution

The fourth proportional to 21,299.31, 31,953.66 and 6,509.39 is: 9,765.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.31 : 31,953.66 = 6,509.39 : x
  2. Step 2: Convert to fraction form
    21,299.31/31,953.66 = 6,509.39/x
  3. Step 3: Cross multiply
    21,299.31x = 31,953.66 × 6,509.39
  4. Step 4: Simplify right side
    21,299.31x = 207,998,675.10
  5. Step 5: Solve for x
    x = 207,998,675.10/21,299.31
  6. Step 6: Final answer
    x = 9,765.51

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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.