Home / 12,885.11-17,779.79-7,577.99

Finding the Fourth Proportional to 12,885.11, 17,779.79 and 7,577.99

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Solution

The fourth proportional to 12,885.11, 17,779.79 and 7,577.99 is: 10,456.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.11 : 17,779.79 = 7,577.99 : x
  2. Step 2: Convert to fraction form
    12,885.11/17,779.79 = 7,577.99/x
  3. Step 3: Cross multiply
    12,885.11x = 17,779.79 × 7,577.99
  4. Step 4: Simplify right side
    12,885.11x = 134,734,944.03
  5. Step 5: Solve for x
    x = 134,734,944.03/12,885.11
  6. Step 6: Final answer
    x = 10,456.64

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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.