Home / 30,949.91-42,711.39-16,802.75

Finding the Fourth Proportional to 30,949.91, 42,711.39 and 16,802.75

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Solution

The fourth proportional to 30,949.91, 42,711.39 and 16,802.75 is: 23,188.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,949.91 : 42,711.39 = 16,802.75 : x
  2. Step 2: Convert to fraction form
    30,949.91/42,711.39 = 16,802.75/x
  3. Step 3: Cross multiply
    30,949.91x = 42,711.39 × 16,802.75
  4. Step 4: Simplify right side
    30,949.91x = 717,668,808.32
  5. Step 5: Solve for x
    x = 717,668,808.32/30,949.91
  6. Step 6: Final answer
    x = 23,188.07

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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.