Home / 30,960.18-42,724.65-16,813.11

Finding the Fourth Proportional to 30,960.18, 42,724.65 and 16,813.11

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Solution

The fourth proportional to 30,960.18, 42,724.65 and 16,813.11 is: 23,201.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,960.18 : 42,724.65 = 16,813.11 : x
  2. Step 2: Convert to fraction form
    30,960.18/42,724.65 = 16,813.11/x
  3. Step 3: Cross multiply
    30,960.18x = 42,724.65 × 16,813.11
  4. Step 4: Simplify right side
    30,960.18x = 718,334,240.16
  5. Step 5: Solve for x
    x = 718,334,240.16/30,960.18
  6. Step 6: Final answer
    x = 23,201.88

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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.