Home / 13,749.47-20,631.36-7,508.31

Finding the Fourth Proportional to 13,749.47, 20,631.36 and 7,508.31

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Solution

The fourth proportional to 13,749.47, 20,631.36 and 7,508.31 is: 11,266.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.47 : 20,631.36 = 7,508.31 : x
  2. Step 2: Convert to fraction form
    13,749.47/20,631.36 = 7,508.31/x
  3. Step 3: Cross multiply
    13,749.47x = 20,631.36 × 7,508.31
  4. Step 4: Simplify right side
    13,749.47x = 154,906,646.60
  5. Step 5: Solve for x
    x = 154,906,646.60/13,749.47
  6. Step 6: Final answer
    x = 11,266.38

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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.