Home / 30,455.96-42,016.10-17,708.18

Finding the Fourth Proportional to 30,455.96, 42,016.10 and 17,708.18

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Solution

The fourth proportional to 30,455.96, 42,016.10 and 17,708.18 is: 24,429.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,455.96 : 42,016.10 = 17,708.18 : x
  2. Step 2: Convert to fraction form
    30,455.96/42,016.10 = 17,708.18/x
  3. Step 3: Cross multiply
    30,455.96x = 42,016.10 × 17,708.18
  4. Step 4: Simplify right side
    30,455.96x = 744,028,661.70
  5. Step 5: Solve for x
    x = 744,028,661.70/30,455.96
  6. Step 6: Final answer
    x = 24,429.66

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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.