Home / 21,173.60-29,223.24-12,219.59

Finding the Fourth Proportional to 21,173.60, 29,223.24 and 12,219.59

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Solution

The fourth proportional to 21,173.60, 29,223.24 and 12,219.59 is: 16,865.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.60 : 29,223.24 = 12,219.59 : x
  2. Step 2: Convert to fraction form
    21,173.60/29,223.24 = 12,219.59/x
  3. Step 3: Cross multiply
    21,173.60x = 29,223.24 × 12,219.59
  4. Step 4: Simplify right side
    21,173.60x = 357,096,011.27
  5. Step 5: Solve for x
    x = 357,096,011.27/21,173.60
  6. Step 6: Final answer
    x = 16,865.15

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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.