Home / 13,077.41-18,047.18-7,109.48

Finding the Fourth Proportional to 13,077.41, 18,047.18 and 7,109.48

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Solution

The fourth proportional to 13,077.41, 18,047.18 and 7,109.48 is: 9,811.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,077.41 : 18,047.18 = 7,109.48 : x
  2. Step 2: Convert to fraction form
    13,077.41/18,047.18 = 7,109.48/x
  3. Step 3: Cross multiply
    13,077.41x = 18,047.18 × 7,109.48
  4. Step 4: Simplify right side
    13,077.41x = 128,305,939.48
  5. Step 5: Solve for x
    x = 128,305,939.48/13,077.41
  6. Step 6: Final answer
    x = 9,811.27

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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.