Home / 19,410.90-29,120.13-7,725.30

Finding the Fourth Proportional to 19,410.90, 29,120.13 and 7,725.30

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Solution

The fourth proportional to 19,410.90, 29,120.13 and 7,725.30 is: 11,589.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,410.90 : 29,120.13 = 7,725.30 : x
  2. Step 2: Convert to fraction form
    19,410.90/29,120.13 = 7,725.30/x
  3. Step 3: Cross multiply
    19,410.90x = 29,120.13 × 7,725.30
  4. Step 4: Simplify right side
    19,410.90x = 224,961,740.29
  5. Step 5: Solve for x
    x = 224,961,740.29/19,410.90
  6. Step 6: Final answer
    x = 11,589.45

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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.