Home / 30,579.68-42,195.64-17,836.72

Finding the Fourth Proportional to 30,579.68, 42,195.64 and 17,836.72

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Solution

The fourth proportional to 30,579.68, 42,195.64 and 17,836.72 is: 24,612.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.68 : 42,195.64 = 17,836.72 : x
  2. Step 2: Convert to fraction form
    30,579.68/42,195.64 = 17,836.72/x
  3. Step 3: Cross multiply
    30,579.68x = 42,195.64 × 17,836.72
  4. Step 4: Simplify right side
    30,579.68x = 752,631,815.90
  5. Step 5: Solve for x
    x = 752,631,815.90/30,579.68
  6. Step 6: Final answer
    x = 24,612.15

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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.