Home / 21,571.60-29,768.70-12,140.24

Finding the Fourth Proportional to 21,571.60, 29,768.70 and 12,140.24

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Solution

The fourth proportional to 21,571.60, 29,768.70 and 12,140.24 is: 16,753.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.60 : 29,768.70 = 12,140.24 : x
  2. Step 2: Convert to fraction form
    21,571.60/29,768.70 = 12,140.24/x
  3. Step 3: Cross multiply
    21,571.60x = 29,768.70 × 12,140.24
  4. Step 4: Simplify right side
    21,571.60x = 361,399,162.49
  5. Step 5: Solve for x
    x = 361,399,162.49/21,571.60
  6. Step 6: Final answer
    x = 16,753.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.