Home / 21,986.64-32,985.24-6,404.40

Finding the Fourth Proportional to 21,986.64, 32,985.24 and 6,404.40

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Solution

The fourth proportional to 21,986.64, 32,985.24 and 6,404.40 is: 9,608.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.64 : 32,985.24 = 6,404.40 : x
  2. Step 2: Convert to fraction form
    21,986.64/32,985.24 = 6,404.40/x
  3. Step 3: Cross multiply
    21,986.64x = 32,985.24 × 6,404.40
  4. Step 4: Simplify right side
    21,986.64x = 211,250,671.06
  5. Step 5: Solve for x
    x = 211,250,671.06/21,986.64
  6. Step 6: Final answer
    x = 9,608.14

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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.