Home / 30,760.34-42,439.82-18,811.22

Finding the Fourth Proportional to 30,760.34, 42,439.82 and 18,811.22

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Solution

The fourth proportional to 30,760.34, 42,439.82 and 18,811.22 is: 25,953.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,760.34 : 42,439.82 = 18,811.22 : x
  2. Step 2: Convert to fraction form
    30,760.34/42,439.82 = 18,811.22/x
  3. Step 3: Cross multiply
    30,760.34x = 42,439.82 × 18,811.22
  4. Step 4: Simplify right side
    30,760.34x = 798,344,484.53
  5. Step 5: Solve for x
    x = 798,344,484.53/30,760.34
  6. Step 6: Final answer
    x = 25,953.70

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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.