Home / 31,426.46-43,377.70-18,688.60

Finding the Fourth Proportional to 31,426.46, 43,377.70 and 18,688.60

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Solution

The fourth proportional to 31,426.46, 43,377.70 and 18,688.60 is: 25,795.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.46 : 43,377.70 = 18,688.60 : x
  2. Step 2: Convert to fraction form
    31,426.46/43,377.70 = 18,688.60/x
  3. Step 3: Cross multiply
    31,426.46x = 43,377.70 × 18,688.60
  4. Step 4: Simplify right side
    31,426.46x = 810,668,457.32
  5. Step 5: Solve for x
    x = 810,668,457.32/31,426.46
  6. Step 6: Final answer
    x = 25,795.73

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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.