Home / 14,209.20-21,338.10-7,648.20

Finding the Fourth Proportional to 14,209.20, 21,338.10 and 7,648.20

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Solution

The fourth proportional to 14,209.20, 21,338.10 and 7,648.20 is: 11,485.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,209.20 : 21,338.10 = 7,648.20 : x
  2. Step 2: Convert to fraction form
    14,209.20/21,338.10 = 7,648.20/x
  3. Step 3: Cross multiply
    14,209.20x = 21,338.10 × 7,648.20
  4. Step 4: Simplify right side
    14,209.20x = 163,198,056.42
  5. Step 5: Solve for x
    x = 163,198,056.42/14,209.20
  6. Step 6: Final answer
    x = 11,485.38

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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.