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Finding the Fourth Proportional to 13,305.08, 18,359.01 and 7,640.08

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Solution

The fourth proportional to 13,305.08, 18,359.01 and 7,640.08 is: 10,542.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.08 : 18,359.01 = 7,640.08 : x
  2. Step 2: Convert to fraction form
    13,305.08/18,359.01 = 7,640.08/x
  3. Step 3: Cross multiply
    13,305.08x = 18,359.01 × 7,640.08
  4. Step 4: Simplify right side
    13,305.08x = 140,264,259.22
  5. Step 5: Solve for x
    x = 140,264,259.22/13,305.08
  6. Step 6: Final answer
    x = 10,542.16

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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.