Home / 30,605.64-42,238.83-18,676.97

Finding the Fourth Proportional to 30,605.64, 42,238.83 and 18,676.97

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Solution

The fourth proportional to 30,605.64, 42,238.83 and 18,676.97 is: 25,776.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,605.64 : 42,238.83 = 18,676.97 : x
  2. Step 2: Convert to fraction form
    30,605.64/42,238.83 = 18,676.97/x
  3. Step 3: Cross multiply
    30,605.64x = 42,238.83 × 18,676.97
  4. Step 4: Simplify right side
    30,605.64x = 788,893,360.75
  5. Step 5: Solve for x
    x = 788,893,360.75/30,605.64
  6. Step 6: Final answer
    x = 25,776.08

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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.