Home / 12,758.80-19,118.76-6,518.56

Finding the Fourth Proportional to 12,758.80, 19,118.76 and 6,518.56

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Solution

The fourth proportional to 12,758.80, 19,118.76 and 6,518.56 is: 9,767.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.80 : 19,118.76 = 6,518.56 : x
  2. Step 2: Convert to fraction form
    12,758.80/19,118.76 = 6,518.56/x
  3. Step 3: Cross multiply
    12,758.80x = 19,118.76 × 6,518.56
  4. Step 4: Simplify right side
    12,758.80x = 124,626,784.19
  5. Step 5: Solve for x
    x = 124,626,784.19/12,758.80
  6. Step 6: Final answer
    x = 9,767.91

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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.