Home / 30,908.46-42,653.68-16,761.30

Finding the Fourth Proportional to 30,908.46, 42,653.68 and 16,761.30

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Solution

The fourth proportional to 30,908.46, 42,653.68 and 16,761.30 is: 23,130.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,908.46 : 42,653.68 = 16,761.30 : x
  2. Step 2: Convert to fraction form
    30,908.46/42,653.68 = 16,761.30/x
  3. Step 3: Cross multiply
    30,908.46x = 42,653.68 × 16,761.30
  4. Step 4: Simplify right side
    30,908.46x = 714,931,261.05
  5. Step 5: Solve for x
    x = 714,931,261.05/30,908.46
  6. Step 6: Final answer
    x = 23,130.60

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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.