Home / 31,235.04-43,113.60-21,806.64

Finding the Fourth Proportional to 31,235.04, 43,113.60 and 21,806.64

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Solution

The fourth proportional to 31,235.04, 43,113.60 and 21,806.64 is: 30,099.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,235.04 : 43,113.60 = 21,806.64 : x
  2. Step 2: Convert to fraction form
    31,235.04/43,113.60 = 21,806.64/x
  3. Step 3: Cross multiply
    31,235.04x = 43,113.60 × 21,806.64
  4. Step 4: Simplify right side
    31,235.04x = 940,162,754.30
  5. Step 5: Solve for x
    x = 940,162,754.30/31,235.04
  6. Step 6: Final answer
    x = 30,099.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.