Home / 30,891.04-42,629.79-16,743.76

Finding the Fourth Proportional to 30,891.04, 42,629.79 and 16,743.76

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Solution

The fourth proportional to 30,891.04, 42,629.79 and 16,743.76 is: 23,106.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,891.04 : 42,629.79 = 16,743.76 : x
  2. Step 2: Convert to fraction form
    30,891.04/42,629.79 = 16,743.76/x
  3. Step 3: Cross multiply
    30,891.04x = 42,629.79 × 16,743.76
  4. Step 4: Simplify right side
    30,891.04x = 713,782,972.61
  5. Step 5: Solve for x
    x = 713,782,972.61/30,891.04
  6. Step 6: Final answer
    x = 23,106.47

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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.