Home / 21,801.84-32,715.24-9,320.40

Finding the Fourth Proportional to 21,801.84, 32,715.24 and 9,320.40

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Solution

The fourth proportional to 21,801.84, 32,715.24 and 9,320.40 is: 13,985.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,801.84 : 32,715.24 = 9,320.40 : x
  2. Step 2: Convert to fraction form
    21,801.84/32,715.24 = 9,320.40/x
  3. Step 3: Cross multiply
    21,801.84x = 32,715.24 × 9,320.40
  4. Step 4: Simplify right side
    21,801.84x = 304,919,122.90
  5. Step 5: Solve for x
    x = 304,919,122.90/21,801.84
  6. Step 6: Final answer
    x = 13,985.94

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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.