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Finding the Fourth Proportional to 13,047.75, 18,005.37 and 7,079.19

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Solution

The fourth proportional to 13,047.75, 18,005.37 and 7,079.19 is: 9,769.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,047.75 : 18,005.37 = 7,079.19 : x
  2. Step 2: Convert to fraction form
    13,047.75/18,005.37 = 7,079.19/x
  3. Step 3: Cross multiply
    13,047.75x = 18,005.37 × 7,079.19
  4. Step 4: Simplify right side
    13,047.75x = 127,463,435.25
  5. Step 5: Solve for x
    x = 127,463,435.25/13,047.75
  6. Step 6: Final answer
    x = 9,769.00

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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.