Home / 19,911.12-29,845.85-7,426.13

Finding the Fourth Proportional to 19,911.12, 29,845.85 and 7,426.13

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Solution

The fourth proportional to 19,911.12, 29,845.85 and 7,426.13 is: 11,131.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,911.12 : 29,845.85 = 7,426.13 : x
  2. Step 2: Convert to fraction form
    19,911.12/29,845.85 = 7,426.13/x
  3. Step 3: Cross multiply
    19,911.12x = 29,845.85 × 7,426.13
  4. Step 4: Simplify right side
    19,911.12x = 221,638,975.70
  5. Step 5: Solve for x
    x = 221,638,975.70/19,911.12
  6. Step 6: Final answer
    x = 11,131.42

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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.