Home / 13,505.55-18,635.45-7,537.05

Finding the Fourth Proportional to 13,505.55, 18,635.45 and 7,537.05

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Solution

The fourth proportional to 13,505.55, 18,635.45 and 7,537.05 is: 10,399.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,505.55 : 18,635.45 = 7,537.05 : x
  2. Step 2: Convert to fraction form
    13,505.55/18,635.45 = 7,537.05/x
  3. Step 3: Cross multiply
    13,505.55x = 18,635.45 × 7,537.05
  4. Step 4: Simplify right side
    13,505.55x = 140,456,280.74
  5. Step 5: Solve for x
    x = 140,456,280.74/13,505.55
  6. Step 6: Final answer
    x = 10,399.89

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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.