Home / 20,970.44-31,414.13-13,580.09

Finding the Fourth Proportional to 20,970.44, 31,414.13 and 13,580.09

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Solution

The fourth proportional to 20,970.44, 31,414.13 and 13,580.09 is: 20,343.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.44 : 31,414.13 = 13,580.09 : x
  2. Step 2: Convert to fraction form
    20,970.44/31,414.13 = 13,580.09/x
  3. Step 3: Cross multiply
    20,970.44x = 31,414.13 × 13,580.09
  4. Step 4: Simplify right side
    20,970.44x = 426,606,712.67
  5. Step 5: Solve for x
    x = 426,606,712.67/20,970.44
  6. Step 6: Final answer
    x = 20,343.24

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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.