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Finding the Fourth Proportional to 13,333.65, 19,995.84 and 7,419.53

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Solution

The fourth proportional to 13,333.65, 19,995.84 and 7,419.53 is: 11,126.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,333.65 : 19,995.84 = 7,419.53 : x
  2. Step 2: Convert to fraction form
    13,333.65/19,995.84 = 7,419.53/x
  3. Step 3: Cross multiply
    13,333.65x = 19,995.84 × 7,419.53
  4. Step 4: Simplify right side
    13,333.65x = 148,359,634.78
  5. Step 5: Solve for x
    x = 148,359,634.78/13,333.65
  6. Step 6: Final answer
    x = 11,126.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.