Home / 30,964.24-42,730.73-16,816.78

Finding the Fourth Proportional to 30,964.24, 42,730.73 and 16,816.78

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Solution

The fourth proportional to 30,964.24, 42,730.73 and 16,816.78 is: 23,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,964.24 : 42,730.73 = 16,816.78 : x
  2. Step 2: Convert to fraction form
    30,964.24/42,730.73 = 16,816.78/x
  3. Step 3: Cross multiply
    30,964.24x = 42,730.73 × 16,816.78
  4. Step 4: Simplify right side
    30,964.24x = 718,593,285.65
  5. Step 5: Solve for x
    x = 718,593,285.65/30,964.24
  6. Step 6: Final answer
    x = 23,207.20

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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.