Home / 21,232.80-31,854.24-6,440.76

Finding the Fourth Proportional to 21,232.80, 31,854.24 and 6,440.76

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Solution

The fourth proportional to 21,232.80, 31,854.24 and 6,440.76 is: 9,662.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,232.80 : 31,854.24 = 6,440.76 : x
  2. Step 2: Convert to fraction form
    21,232.80/31,854.24 = 6,440.76/x
  3. Step 3: Cross multiply
    21,232.80x = 31,854.24 × 6,440.76
  4. Step 4: Simplify right side
    21,232.80x = 205,165,514.82
  5. Step 5: Solve for x
    x = 205,165,514.82/21,232.80
  6. Step 6: Final answer
    x = 9,662.67

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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.