Home / 14,143.92-21,221.88-7,120.26

Finding the Fourth Proportional to 14,143.92, 21,221.88 and 7,120.26

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Solution

The fourth proportional to 14,143.92, 21,221.88 and 7,120.26 is: 10,683.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,143.92 : 21,221.88 = 7,120.26 : x
  2. Step 2: Convert to fraction form
    14,143.92/21,221.88 = 7,120.26/x
  3. Step 3: Cross multiply
    14,143.92x = 21,221.88 × 7,120.26
  4. Step 4: Simplify right side
    14,143.92x = 151,105,303.29
  5. Step 5: Solve for x
    x = 151,105,303.29/14,143.92
  6. Step 6: Final answer
    x = 10,683.41

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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.