Home / 14,124.78-21,190.64-9,972.90

Finding the Fourth Proportional to 14,124.78, 21,190.64 and 9,972.90

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Solution

The fourth proportional to 14,124.78, 21,190.64 and 9,972.90 is: 14,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.78 : 21,190.64 = 9,972.90 : x
  2. Step 2: Convert to fraction form
    14,124.78/21,190.64 = 9,972.90/x
  3. Step 3: Cross multiply
    14,124.78x = 21,190.64 × 9,972.90
  4. Step 4: Simplify right side
    14,124.78x = 211,332,083.79
  5. Step 5: Solve for x
    x = 211,332,083.79/14,124.78
  6. Step 6: Final answer
    x = 14,961.80

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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.