Home / 13,519.58-18,655.66-7,776.88

Finding the Fourth Proportional to 13,519.58, 18,655.66 and 7,776.88

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Solution

The fourth proportional to 13,519.58, 18,655.66 and 7,776.88 is: 10,731.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.58 : 18,655.66 = 7,776.88 : x
  2. Step 2: Convert to fraction form
    13,519.58/18,655.66 = 7,776.88/x
  3. Step 3: Cross multiply
    13,519.58x = 18,655.66 × 7,776.88
  4. Step 4: Simplify right side
    13,519.58x = 145,082,829.14
  5. Step 5: Solve for x
    x = 145,082,829.14/13,519.58
  6. Step 6: Final answer
    x = 10,731.31

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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.