Home / 14,546.40-21,819.60-5,311.20

Finding the Fourth Proportional to 14,546.40, 21,819.60 and 5,311.20

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Solution

The fourth proportional to 14,546.40, 21,819.60 and 5,311.20 is: 7,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,546.40 : 21,819.60 = 5,311.20 : x
  2. Step 2: Convert to fraction form
    14,546.40/21,819.60 = 5,311.20/x
  3. Step 3: Cross multiply
    14,546.40x = 21,819.60 × 5,311.20
  4. Step 4: Simplify right side
    14,546.40x = 115,888,259.52
  5. Step 5: Solve for x
    x = 115,888,259.52/14,546.40
  6. Step 6: Final answer
    x = 7,966.80

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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.