Home / 13,507.46-18,640.05-7,539.02

Finding the Fourth Proportional to 13,507.46, 18,640.05 and 7,539.02

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Solution

The fourth proportional to 13,507.46, 18,640.05 and 7,539.02 is: 10,403.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.46 : 18,640.05 = 7,539.02 : x
  2. Step 2: Convert to fraction form
    13,507.46/18,640.05 = 7,539.02/x
  3. Step 3: Cross multiply
    13,507.46x = 18,640.05 × 7,539.02
  4. Step 4: Simplify right side
    13,507.46x = 140,527,709.75
  5. Step 5: Solve for x
    x = 140,527,709.75/13,507.46
  6. Step 6: Final answer
    x = 10,403.71

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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.