Home / 30,623.04-42,229.08-28,957.68

Finding the Fourth Proportional to 30,623.04, 42,229.08 and 28,957.68

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Solution

The fourth proportional to 30,623.04, 42,229.08 and 28,957.68 is: 39,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,623.04 : 42,229.08 = 28,957.68 : x
  2. Step 2: Convert to fraction form
    30,623.04/42,229.08 = 28,957.68/x
  3. Step 3: Cross multiply
    30,623.04x = 42,229.08 × 28,957.68
  4. Step 4: Simplify right side
    30,623.04x = 1,222,856,185.33
  5. Step 5: Solve for x
    x = 1,222,856,185.33/30,623.04
  6. Step 6: Final answer
    x = 39,932.55

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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.