Home / 13,353.82-18,428.16-7,385.32

Finding the Fourth Proportional to 13,353.82, 18,428.16 and 7,385.32

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Solution

The fourth proportional to 13,353.82, 18,428.16 and 7,385.32 is: 10,191.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.82 : 18,428.16 = 7,385.32 : x
  2. Step 2: Convert to fraction form
    13,353.82/18,428.16 = 7,385.32/x
  3. Step 3: Cross multiply
    13,353.82x = 18,428.16 × 7,385.32
  4. Step 4: Simplify right side
    13,353.82x = 136,097,858.61
  5. Step 5: Solve for x
    x = 136,097,858.61/13,353.82
  6. Step 6: Final answer
    x = 10,191.68

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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.