Home / 30,664.29-42,320.63-18,725.12

Finding the Fourth Proportional to 30,664.29, 42,320.63 and 18,725.12

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Solution

The fourth proportional to 30,664.29, 42,320.63 and 18,725.12 is: 25,843.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,664.29 : 42,320.63 = 18,725.12 : x
  2. Step 2: Convert to fraction form
    30,664.29/42,320.63 = 18,725.12/x
  3. Step 3: Cross multiply
    30,664.29x = 42,320.63 × 18,725.12
  4. Step 4: Simplify right side
    30,664.29x = 792,458,710.44
  5. Step 5: Solve for x
    x = 792,458,710.44/30,664.29
  6. Step 6: Final answer
    x = 25,843.05

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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.