Home / 13,118.90-19,677.29-5,221.13

Finding the Fourth Proportional to 13,118.90, 19,677.29 and 5,221.13

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Solution

The fourth proportional to 13,118.90, 19,677.29 and 5,221.13 is: 7,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.90 : 19,677.29 = 5,221.13 : x
  2. Step 2: Convert to fraction form
    13,118.90/19,677.29 = 5,221.13/x
  3. Step 3: Cross multiply
    13,118.90x = 19,677.29 × 5,221.13
  4. Step 4: Simplify right side
    13,118.90x = 102,737,564.65
  5. Step 5: Solve for x
    x = 102,737,564.65/13,118.90
  6. Step 6: Final answer
    x = 7,831.27

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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.