Home / 14,640.40-21,962.10-4,780.42

Finding the Fourth Proportional to 14,640.40, 21,962.10 and 4,780.42

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Solution

The fourth proportional to 14,640.40, 21,962.10 and 4,780.42 is: 7,171.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,640.40 : 21,962.10 = 4,780.42 : x
  2. Step 2: Convert to fraction form
    14,640.40/21,962.10 = 4,780.42/x
  3. Step 3: Cross multiply
    14,640.40x = 21,962.10 × 4,780.42
  4. Step 4: Simplify right side
    14,640.40x = 104,988,062.08
  5. Step 5: Solve for x
    x = 104,988,062.08/14,640.40
  6. Step 6: Final answer
    x = 7,171.12

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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.