Home / 21,624.64-32,419.68-9,321.28

Finding the Fourth Proportional to 21,624.64, 32,419.68 and 9,321.28

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Solution

The fourth proportional to 21,624.64, 32,419.68 and 9,321.28 is: 13,974.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.64 : 32,419.68 = 9,321.28 : x
  2. Step 2: Convert to fraction form
    21,624.64/32,419.68 = 9,321.28/x
  3. Step 3: Cross multiply
    21,624.64x = 32,419.68 × 9,321.28
  4. Step 4: Simplify right side
    21,624.64x = 302,192,914.79
  5. Step 5: Solve for x
    x = 302,192,914.79/21,624.64
  6. Step 6: Final answer
    x = 13,974.47

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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.