Home / 30,658.28-42,309.16-17,228.72

Finding the Fourth Proportional to 30,658.28, 42,309.16 and 17,228.72

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Solution

The fourth proportional to 30,658.28, 42,309.16 and 17,228.72 is: 23,776.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,658.28 : 42,309.16 = 17,228.72 : x
  2. Step 2: Convert to fraction form
    30,658.28/42,309.16 = 17,228.72/x
  3. Step 3: Cross multiply
    30,658.28x = 42,309.16 × 17,228.72
  4. Step 4: Simplify right side
    30,658.28x = 728,932,671.08
  5. Step 5: Solve for x
    x = 728,932,671.08/30,658.28
  6. Step 6: Final answer
    x = 23,776.05

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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.