Home / 31,806.68-47,719.25-12,821.52

Finding the Fourth Proportional to 31,806.68, 47,719.25 and 12,821.52

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Solution

The fourth proportional to 31,806.68, 47,719.25 and 12,821.52 is: 19,236.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,806.68 : 47,719.25 = 12,821.52 : x
  2. Step 2: Convert to fraction form
    31,806.68/47,719.25 = 12,821.52/x
  3. Step 3: Cross multiply
    31,806.68x = 47,719.25 × 12,821.52
  4. Step 4: Simplify right side
    31,806.68x = 611,833,181.84
  5. Step 5: Solve for x
    x = 611,833,181.84/31,806.68
  6. Step 6: Final answer
    x = 19,236.00

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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.