Home / 13,013.29-19,521.03-5,115.18

Finding the Fourth Proportional to 13,013.29, 19,521.03 and 5,115.18

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Solution

The fourth proportional to 13,013.29, 19,521.03 and 5,115.18 is: 7,673.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,013.29 : 19,521.03 = 5,115.18 : x
  2. Step 2: Convert to fraction form
    13,013.29/19,521.03 = 5,115.18/x
  3. Step 3: Cross multiply
    13,013.29x = 19,521.03 × 5,115.18
  4. Step 4: Simplify right side
    13,013.29x = 99,853,674.62
  5. Step 5: Solve for x
    x = 99,853,674.62/13,013.29
  6. Step 6: Final answer
    x = 7,673.21

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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.