Home / 13,330.81-18,396.89-7,281.43

Finding the Fourth Proportional to 13,330.81, 18,396.89 and 7,281.43

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Solution

The fourth proportional to 13,330.81, 18,396.89 and 7,281.43 is: 10,048.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.81 : 18,396.89 = 7,281.43 : x
  2. Step 2: Convert to fraction form
    13,330.81/18,396.89 = 7,281.43/x
  3. Step 3: Cross multiply
    13,330.81x = 18,396.89 × 7,281.43
  4. Step 4: Simplify right side
    13,330.81x = 133,955,611.66
  5. Step 5: Solve for x
    x = 133,955,611.66/13,330.81
  6. Step 6: Final answer
    x = 10,048.57

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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.