Home / 30,873.84-42,606.70-18,930.30

Finding the Fourth Proportional to 30,873.84, 42,606.70 and 18,930.30

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Solution

The fourth proportional to 30,873.84, 42,606.70 and 18,930.30 is: 26,124.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,873.84 : 42,606.70 = 18,930.30 : x
  2. Step 2: Convert to fraction form
    30,873.84/42,606.70 = 18,930.30/x
  3. Step 3: Cross multiply
    30,873.84x = 42,606.70 × 18,930.30
  4. Step 4: Simplify right side
    30,873.84x = 806,557,613.01
  5. Step 5: Solve for x
    x = 806,557,613.01/30,873.84
  6. Step 6: Final answer
    x = 26,124.31

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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.