Home / 18,772.56-28,153.98-7,677.18

Finding the Fourth Proportional to 18,772.56, 28,153.98 and 7,677.18

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Solution

The fourth proportional to 18,772.56, 28,153.98 and 7,677.18 is: 11,513.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.56 : 28,153.98 = 7,677.18 : x
  2. Step 2: Convert to fraction form
    18,772.56/28,153.98 = 7,677.18/x
  3. Step 3: Cross multiply
    18,772.56x = 28,153.98 × 7,677.18
  4. Step 4: Simplify right side
    18,772.56x = 216,143,172.18
  5. Step 5: Solve for x
    x = 216,143,172.18/18,772.56
  6. Step 6: Final answer
    x = 11,513.78

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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.