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Finding the Fourth Proportional to 14,452.40, 21,653.40 and 6,645.20

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Solution

The fourth proportional to 14,452.40, 21,653.40 and 6,645.20 is: 9,956.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,452.40 : 21,653.40 = 6,645.20 : x
  2. Step 2: Convert to fraction form
    14,452.40/21,653.40 = 6,645.20/x
  3. Step 3: Cross multiply
    14,452.40x = 21,653.40 × 6,645.20
  4. Step 4: Simplify right side
    14,452.40x = 143,891,173.68
  5. Step 5: Solve for x
    x = 143,891,173.68/14,452.40
  6. Step 6: Final answer
    x = 9,956.21

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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.