Home / 30,964.15-42,729.82-16,816.69

Finding the Fourth Proportional to 30,964.15, 42,729.82 and 16,816.69

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Solution

The fourth proportional to 30,964.15, 42,729.82 and 16,816.69 is: 23,206.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,964.15 : 42,729.82 = 16,816.69 : x
  2. Step 2: Convert to fraction form
    30,964.15/42,729.82 = 16,816.69/x
  3. Step 3: Cross multiply
    30,964.15x = 42,729.82 × 16,816.69
  4. Step 4: Simplify right side
    30,964.15x = 718,574,136.70
  5. Step 5: Solve for x
    x = 718,574,136.70/30,964.15
  6. Step 6: Final answer
    x = 23,206.65

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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.