Home / 21,231.52-31,847.40-6,440.46

Finding the Fourth Proportional to 21,231.52, 31,847.40 and 6,440.46

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Solution

The fourth proportional to 21,231.52, 31,847.40 and 6,440.46 is: 9,660.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.52 : 31,847.40 = 6,440.46 : x
  2. Step 2: Convert to fraction form
    21,231.52/31,847.40 = 6,440.46/x
  3. Step 3: Cross multiply
    21,231.52x = 31,847.40 × 6,440.46
  4. Step 4: Simplify right side
    21,231.52x = 205,111,746.57
  5. Step 5: Solve for x
    x = 205,111,746.57/21,231.52
  6. Step 6: Final answer
    x = 9,660.72

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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.