Home / 30,769.10-42,463.36-17,158.68

Finding the Fourth Proportional to 30,769.10, 42,463.36 and 17,158.68

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Solution

The fourth proportional to 30,769.10, 42,463.36 and 17,158.68 is: 23,680.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,769.10 : 42,463.36 = 17,158.68 : x
  2. Step 2: Convert to fraction form
    30,769.10/42,463.36 = 17,158.68/x
  3. Step 3: Cross multiply
    30,769.10x = 42,463.36 × 17,158.68
  4. Step 4: Simplify right side
    30,769.10x = 728,615,205.96
  5. Step 5: Solve for x
    x = 728,615,205.96/30,769.10
  6. Step 6: Final answer
    x = 23,680.09

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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.