Home / 13,330.68-18,396.42-7,280.76

Finding the Fourth Proportional to 13,330.68, 18,396.42 and 7,280.76

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Solution

The fourth proportional to 13,330.68, 18,396.42 and 7,280.76 is: 10,047.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.68 : 18,396.42 = 7,280.76 : x
  2. Step 2: Convert to fraction form
    13,330.68/18,396.42 = 7,280.76/x
  3. Step 3: Cross multiply
    13,330.68x = 18,396.42 × 7,280.76
  4. Step 4: Simplify right side
    13,330.68x = 133,939,918.88
  5. Step 5: Solve for x
    x = 133,939,918.88/13,330.68
  6. Step 6: Final answer
    x = 10,047.49

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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.