Home / 20,716.40-31,074.60-19,593.20

Finding the Fourth Proportional to 20,716.40, 31,074.60 and 19,593.20

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Solution

The fourth proportional to 20,716.40, 31,074.60 and 19,593.20 is: 29,389.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.40 : 31,074.60 = 19,593.20 : x
  2. Step 2: Convert to fraction form
    20,716.40/31,074.60 = 19,593.20/x
  3. Step 3: Cross multiply
    20,716.40x = 31,074.60 × 19,593.20
  4. Step 4: Simplify right side
    20,716.40x = 608,850,852.72
  5. Step 5: Solve for x
    x = 608,850,852.72/20,716.40
  6. Step 6: Final answer
    x = 29,389.80

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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.