Home / 20,736.40-31,104.60-13,349.20

Finding the Fourth Proportional to 20,736.40, 31,104.60 and 13,349.20

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Solution

The fourth proportional to 20,736.40, 31,104.60 and 13,349.20 is: 20,023.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.40 : 31,104.60 = 13,349.20 : x
  2. Step 2: Convert to fraction form
    20,736.40/31,104.60 = 13,349.20/x
  3. Step 3: Cross multiply
    20,736.40x = 31,104.60 × 13,349.20
  4. Step 4: Simplify right side
    20,736.40x = 415,221,526.32
  5. Step 5: Solve for x
    x = 415,221,526.32/20,736.40
  6. Step 6: Final answer
    x = 20,023.80

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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.