Home / 30,928.68-42,682.08-16,781.53

Finding the Fourth Proportional to 30,928.68, 42,682.08 and 16,781.53

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Solution

The fourth proportional to 30,928.68, 42,682.08 and 16,781.53 is: 23,158.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,928.68 : 42,682.08 = 16,781.53 : x
  2. Step 2: Convert to fraction form
    30,928.68/42,682.08 = 16,781.53/x
  3. Step 3: Cross multiply
    30,928.68x = 42,682.08 × 16,781.53
  4. Step 4: Simplify right side
    30,928.68x = 716,270,308.66
  5. Step 5: Solve for x
    x = 716,270,308.66/30,928.68
  6. Step 6: Final answer
    x = 23,158.77

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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.