Home / 30,928.92-42,680.76-16,781.46

Finding the Fourth Proportional to 30,928.92, 42,680.76 and 16,781.46

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Solution

The fourth proportional to 30,928.92, 42,680.76 and 16,781.46 is: 23,157.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,928.92 : 42,680.76 = 16,781.46 : x
  2. Step 2: Convert to fraction form
    30,928.92/42,680.76 = 16,781.46/x
  3. Step 3: Cross multiply
    30,928.92x = 42,680.76 × 16,781.46
  4. Step 4: Simplify right side
    30,928.92x = 716,245,466.71
  5. Step 5: Solve for x
    x = 716,245,466.71/30,928.92
  6. Step 6: Final answer
    x = 23,157.79

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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.