Home / 13,614.39-18,787.55-7,564.30

Finding the Fourth Proportional to 13,614.39, 18,787.55 and 7,564.30

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Solution

The fourth proportional to 13,614.39, 18,787.55 and 7,564.30 is: 10,438.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.39 : 18,787.55 = 7,564.30 : x
  2. Step 2: Convert to fraction form
    13,614.39/18,787.55 = 7,564.30/x
  3. Step 3: Cross multiply
    13,614.39x = 18,787.55 × 7,564.30
  4. Step 4: Simplify right side
    13,614.39x = 142,114,579.67
  5. Step 5: Solve for x
    x = 142,114,579.67/13,614.39
  6. Step 6: Final answer
    x = 10,438.56

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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.