Home / 18,948.21-28,410.17-7,862.55

Finding the Fourth Proportional to 18,948.21, 28,410.17 and 7,862.55

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Solution

The fourth proportional to 18,948.21, 28,410.17 and 7,862.55 is: 11,788.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,948.21 : 28,410.17 = 7,862.55 : x
  2. Step 2: Convert to fraction form
    18,948.21/28,410.17 = 7,862.55/x
  3. Step 3: Cross multiply
    18,948.21x = 28,410.17 × 7,862.55
  4. Step 4: Simplify right side
    18,948.21x = 223,376,342.82
  5. Step 5: Solve for x
    x = 223,376,342.82/18,948.21
  6. Step 6: Final answer
    x = 11,788.78

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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.