Home / 13,330.78-18,396.15-7,362.39

Finding the Fourth Proportional to 13,330.78, 18,396.15 and 7,362.39

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Solution

The fourth proportional to 13,330.78, 18,396.15 and 7,362.39 is: 10,159.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.78 : 18,396.15 = 7,362.39 : x
  2. Step 2: Convert to fraction form
    13,330.78/18,396.15 = 7,362.39/x
  3. Step 3: Cross multiply
    13,330.78x = 18,396.15 × 7,362.39
  4. Step 4: Simplify right side
    13,330.78x = 135,439,672.18
  5. Step 5: Solve for x
    x = 135,439,672.18/13,330.78
  6. Step 6: Final answer
    x = 10,159.92

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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.