Home / 13,355.10-18,428.54-7,385.27

Finding the Fourth Proportional to 13,355.10, 18,428.54 and 7,385.27

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Solution

The fourth proportional to 13,355.10, 18,428.54 and 7,385.27 is: 10,190.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.10 : 18,428.54 = 7,385.27 : x
  2. Step 2: Convert to fraction form
    13,355.10/18,428.54 = 7,385.27/x
  3. Step 3: Cross multiply
    13,355.10x = 18,428.54 × 7,385.27
  4. Step 4: Simplify right side
    13,355.10x = 136,099,614.54
  5. Step 5: Solve for x
    x = 136,099,614.54/13,355.10
  6. Step 6: Final answer
    x = 10,190.83

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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.