Home / 19,410.84-29,111.94-7,720.92

Finding the Fourth Proportional to 19,410.84, 29,111.94 and 7,720.92

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Solution

The fourth proportional to 19,410.84, 29,111.94 and 7,720.92 is: 11,579.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,410.84 : 29,111.94 = 7,720.92 : x
  2. Step 2: Convert to fraction form
    19,410.84/29,111.94 = 7,720.92/x
  3. Step 3: Cross multiply
    19,410.84x = 29,111.94 × 7,720.92
  4. Step 4: Simplify right side
    19,410.84x = 224,770,959.78
  5. Step 5: Solve for x
    x = 224,770,959.78/19,410.84
  6. Step 6: Final answer
    x = 11,579.66

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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.