Home / 12,934.08-19,405.44-5,140.80

Finding the Fourth Proportional to 12,934.08, 19,405.44 and 5,140.80

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Solution

The fourth proportional to 12,934.08, 19,405.44 and 5,140.80 is: 7,712.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,934.08 : 19,405.44 = 5,140.80 : x
  2. Step 2: Convert to fraction form
    12,934.08/19,405.44 = 5,140.80/x
  3. Step 3: Cross multiply
    12,934.08x = 19,405.44 × 5,140.80
  4. Step 4: Simplify right side
    12,934.08x = 99,759,485.95
  5. Step 5: Solve for x
    x = 99,759,485.95/12,934.08
  6. Step 6: Final answer
    x = 7,712.92

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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.