Home / 12,747.50-19,126.61-6,419.08

Finding the Fourth Proportional to 12,747.50, 19,126.61 and 6,419.08

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Solution

The fourth proportional to 12,747.50, 19,126.61 and 6,419.08 is: 9,631.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.50 : 19,126.61 = 6,419.08 : x
  2. Step 2: Convert to fraction form
    12,747.50/19,126.61 = 6,419.08/x
  3. Step 3: Cross multiply
    12,747.50x = 19,126.61 × 6,419.08
  4. Step 4: Simplify right side
    12,747.50x = 122,775,239.72
  5. Step 5: Solve for x
    x = 122,775,239.72/12,747.50
  6. Step 6: Final answer
    x = 9,631.32

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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.