Home / 12,637.78-18,958.35-4,315.56

Finding the Fourth Proportional to 12,637.78, 18,958.35 and 4,315.56

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Solution

The fourth proportional to 12,637.78, 18,958.35 and 4,315.56 is: 6,473.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,637.78 : 18,958.35 = 4,315.56 : x
  2. Step 2: Convert to fraction form
    12,637.78/18,958.35 = 4,315.56/x
  3. Step 3: Cross multiply
    12,637.78x = 18,958.35 × 4,315.56
  4. Step 4: Simplify right side
    12,637.78x = 81,815,948.66
  5. Step 5: Solve for x
    x = 81,815,948.66/12,637.78
  6. Step 6: Final answer
    x = 6,473.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.