Home / 21,715.08-32,568.96-9,865.20

Finding the Fourth Proportional to 21,715.08, 32,568.96 and 9,865.20

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Solution

The fourth proportional to 21,715.08, 32,568.96 and 9,865.20 is: 14,796.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.08 : 32,568.96 = 9,865.20 : x
  2. Step 2: Convert to fraction form
    21,715.08/32,568.96 = 9,865.20/x
  3. Step 3: Cross multiply
    21,715.08x = 32,568.96 × 9,865.20
  4. Step 4: Simplify right side
    21,715.08x = 321,299,304.19
  5. Step 5: Solve for x
    x = 321,299,304.19/21,715.08
  6. Step 6: Final answer
    x = 14,796.14

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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.