Home / 33,129.96-45,720.18-18,987.40

Finding the Fourth Proportional to 33,129.96, 45,720.18 and 18,987.40

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Solution

The fourth proportional to 33,129.96, 45,720.18 and 18,987.40 is: 26,203.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,129.96 : 45,720.18 = 18,987.40 : x
  2. Step 2: Convert to fraction form
    33,129.96/45,720.18 = 18,987.40/x
  3. Step 3: Cross multiply
    33,129.96x = 45,720.18 × 18,987.40
  4. Step 4: Simplify right side
    33,129.96x = 868,107,345.73
  5. Step 5: Solve for x
    x = 868,107,345.73/33,129.96
  6. Step 6: Final answer
    x = 26,203.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.