Home / 13,519.60-18,656.85-7,551.36

Finding the Fourth Proportional to 13,519.60, 18,656.85 and 7,551.36

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Solution

The fourth proportional to 13,519.60, 18,656.85 and 7,551.36 is: 10,420.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.60 : 18,656.85 = 7,551.36 : x
  2. Step 2: Convert to fraction form
    13,519.60/18,656.85 = 7,551.36/x
  3. Step 3: Cross multiply
    13,519.60x = 18,656.85 × 7,551.36
  4. Step 4: Simplify right side
    13,519.60x = 140,884,497.53
  5. Step 5: Solve for x
    x = 140,884,497.53/13,519.60
  6. Step 6: Final answer
    x = 10,420.76

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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.