Home / 30,910.96-42,655.36-18,162.16

Finding the Fourth Proportional to 30,910.96, 42,655.36 and 18,162.16

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Solution

The fourth proportional to 30,910.96, 42,655.36 and 18,162.16 is: 25,062.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,910.96 : 42,655.36 = 18,162.16 : x
  2. Step 2: Convert to fraction form
    30,910.96/42,655.36 = 18,162.16/x
  3. Step 3: Cross multiply
    30,910.96x = 42,655.36 × 18,162.16
  4. Step 4: Simplify right side
    30,910.96x = 774,713,473.18
  5. Step 5: Solve for x
    x = 774,713,473.18/30,910.96
  6. Step 6: Final answer
    x = 25,062.74

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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.