Home / 19,116.78-28,669.69-7,427.26

Finding the Fourth Proportional to 19,116.78, 28,669.69 and 7,427.26

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Solution

The fourth proportional to 19,116.78, 28,669.69 and 7,427.26 is: 11,138.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,116.78 : 28,669.69 = 7,427.26 : x
  2. Step 2: Convert to fraction form
    19,116.78/28,669.69 = 7,427.26/x
  3. Step 3: Cross multiply
    19,116.78x = 28,669.69 × 7,427.26
  4. Step 4: Simplify right side
    19,116.78x = 212,937,241.75
  5. Step 5: Solve for x
    x = 212,937,241.75/19,116.78
  6. Step 6: Final answer
    x = 11,138.76

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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.