Home / 12,528.50-18,787.16-3,764.09

Finding the Fourth Proportional to 12,528.50, 18,787.16 and 3,764.09

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Solution

The fourth proportional to 12,528.50, 18,787.16 and 3,764.09 is: 5,644.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.50 : 18,787.16 = 3,764.09 : x
  2. Step 2: Convert to fraction form
    12,528.50/18,787.16 = 3,764.09/x
  3. Step 3: Cross multiply
    12,528.50x = 18,787.16 × 3,764.09
  4. Step 4: Simplify right side
    12,528.50x = 70,716,448.33
  5. Step 5: Solve for x
    x = 70,716,448.33/12,528.50
  6. Step 6: Final answer
    x = 5,644.45

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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.