Home / 13,513.47-20,279.77-4,749.07

Finding the Fourth Proportional to 13,513.47, 20,279.77 and 4,749.07

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Solution

The fourth proportional to 13,513.47, 20,279.77 and 4,749.07 is: 7,126.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.47 : 20,279.77 = 4,749.07 : x
  2. Step 2: Convert to fraction form
    13,513.47/20,279.77 = 4,749.07/x
  3. Step 3: Cross multiply
    13,513.47x = 20,279.77 × 4,749.07
  4. Step 4: Simplify right side
    13,513.47x = 96,310,047.31
  5. Step 5: Solve for x
    x = 96,310,047.31/13,513.47
  6. Step 6: Final answer
    x = 7,126.97

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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.