Home / 20,461.44-28,236.48-11,386.74

Finding the Fourth Proportional to 20,461.44, 28,236.48 and 11,386.74

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Solution

The fourth proportional to 20,461.44, 28,236.48 and 11,386.74 is: 15,713.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.44 : 28,236.48 = 11,386.74 : x
  2. Step 2: Convert to fraction form
    20,461.44/28,236.48 = 11,386.74/x
  3. Step 3: Cross multiply
    20,461.44x = 28,236.48 × 11,386.74
  4. Step 4: Simplify right side
    20,461.44x = 321,521,456.28
  5. Step 5: Solve for x
    x = 321,521,456.28/20,461.44
  6. Step 6: Final answer
    x = 15,713.53

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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.