Home / 14,188.68-21,270.60-5,417.28

Finding the Fourth Proportional to 14,188.68, 21,270.60 and 5,417.28

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Solution

The fourth proportional to 14,188.68, 21,270.60 and 5,417.28 is: 8,121.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,188.68 : 21,270.60 = 5,417.28 : x
  2. Step 2: Convert to fraction form
    14,188.68/21,270.60 = 5,417.28/x
  3. Step 3: Cross multiply
    14,188.68x = 21,270.60 × 5,417.28
  4. Step 4: Simplify right side
    14,188.68x = 115,228,795.97
  5. Step 5: Solve for x
    x = 115,228,795.97/14,188.68
  6. Step 6: Final answer
    x = 8,121.18

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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.