Home / 18,815.40-25,970.22-11,737.68

Finding the Fourth Proportional to 18,815.40, 25,970.22 and 11,737.68

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Solution

The fourth proportional to 18,815.40, 25,970.22 and 11,737.68 is: 16,201.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.40 : 25,970.22 = 11,737.68 : x
  2. Step 2: Convert to fraction form
    18,815.40/25,970.22 = 11,737.68/x
  3. Step 3: Cross multiply
    18,815.40x = 25,970.22 × 11,737.68
  4. Step 4: Simplify right side
    18,815.40x = 304,830,131.89
  5. Step 5: Solve for x
    x = 304,830,131.89/18,815.40
  6. Step 6: Final answer
    x = 16,201.10

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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.