Home / 13,519.78-18,656.49-7,551.83

Finding the Fourth Proportional to 13,519.78, 18,656.49 and 7,551.83

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Solution

The fourth proportional to 13,519.78, 18,656.49 and 7,551.83 is: 10,421.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.78 : 18,656.49 = 7,551.83 : x
  2. Step 2: Convert to fraction form
    13,519.78/18,656.49 = 7,551.83/x
  3. Step 3: Cross multiply
    13,519.78x = 18,656.49 × 7,551.83
  4. Step 4: Simplify right side
    13,519.78x = 140,890,715.84
  5. Step 5: Solve for x
    x = 140,890,715.84/13,519.78
  6. Step 6: Final answer
    x = 10,421.08

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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.