Home / 30,976.20-42,747.04-16,828.92

Finding the Fourth Proportional to 30,976.20, 42,747.04 and 16,828.92

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Solution

The fourth proportional to 30,976.20, 42,747.04 and 16,828.92 is: 23,223.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,976.20 : 42,747.04 = 16,828.92 : x
  2. Step 2: Convert to fraction form
    30,976.20/42,747.04 = 16,828.92/x
  3. Step 3: Cross multiply
    30,976.20x = 42,747.04 × 16,828.92
  4. Step 4: Simplify right side
    30,976.20x = 719,386,218.52
  5. Step 5: Solve for x
    x = 719,386,218.52/30,976.20
  6. Step 6: Final answer
    x = 23,223.84

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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.