Home / 19,456.08-29,140.20-11,648.40

Finding the Fourth Proportional to 19,456.08, 29,140.20 and 11,648.40

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Solution

The fourth proportional to 19,456.08, 29,140.20 and 11,648.40 is: 17,446.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,456.08 : 29,140.20 = 11,648.40 : x
  2. Step 2: Convert to fraction form
    19,456.08/29,140.20 = 11,648.40/x
  3. Step 3: Cross multiply
    19,456.08x = 29,140.20 × 11,648.40
  4. Step 4: Simplify right side
    19,456.08x = 339,436,705.68
  5. Step 5: Solve for x
    x = 339,436,705.68/19,456.08
  6. Step 6: Final answer
    x = 17,446.30

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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.