Home / 13,305.56-18,362.43-7,640.24

Finding the Fourth Proportional to 13,305.56, 18,362.43 and 7,640.24

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Solution

The fourth proportional to 13,305.56, 18,362.43 and 7,640.24 is: 10,543.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.56 : 18,362.43 = 7,640.24 : x
  2. Step 2: Convert to fraction form
    13,305.56/18,362.43 = 7,640.24/x
  3. Step 3: Cross multiply
    13,305.56x = 18,362.43 × 7,640.24
  4. Step 4: Simplify right side
    13,305.56x = 140,293,280.37
  5. Step 5: Solve for x
    x = 140,293,280.37/13,305.56
  6. Step 6: Final answer
    x = 10,543.96

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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.