Home / 12,777.60-19,165.20-5,758.08

Finding the Fourth Proportional to 12,777.60, 19,165.20 and 5,758.08

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Solution

The fourth proportional to 12,777.60, 19,165.20 and 5,758.08 is: 8,636.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.60 : 19,165.20 = 5,758.08 : x
  2. Step 2: Convert to fraction form
    12,777.60/19,165.20 = 5,758.08/x
  3. Step 3: Cross multiply
    12,777.60x = 19,165.20 × 5,758.08
  4. Step 4: Simplify right side
    12,777.60x = 110,354,754.82
  5. Step 5: Solve for x
    x = 110,354,754.82/12,777.60
  6. Step 6: Final answer
    x = 8,636.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.