Home / 13,372.55-18,455.15-7,404.77

Finding the Fourth Proportional to 13,372.55, 18,455.15 and 7,404.77

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Solution

The fourth proportional to 13,372.55, 18,455.15 and 7,404.77 is: 10,219.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,372.55 : 18,455.15 = 7,404.77 : x
  2. Step 2: Convert to fraction form
    13,372.55/18,455.15 = 7,404.77/x
  3. Step 3: Cross multiply
    13,372.55x = 18,455.15 × 7,404.77
  4. Step 4: Simplify right side
    13,372.55x = 136,656,141.07
  5. Step 5: Solve for x
    x = 136,656,141.07/13,372.55
  6. Step 6: Final answer
    x = 10,219.15

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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.