Home / 14,220.60-21,331.44-5,456.40

Finding the Fourth Proportional to 14,220.60, 21,331.44 and 5,456.40

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Solution

The fourth proportional to 14,220.60, 21,331.44 and 5,456.40 is: 8,184.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.60 : 21,331.44 = 5,456.40 : x
  2. Step 2: Convert to fraction form
    14,220.60/21,331.44 = 5,456.40/x
  3. Step 3: Cross multiply
    14,220.60x = 21,331.44 × 5,456.40
  4. Step 4: Simplify right side
    14,220.60x = 116,392,869.22
  5. Step 5: Solve for x
    x = 116,392,869.22/14,220.60
  6. Step 6: Final answer
    x = 8,184.81

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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.