Home / 39,402.34-54,375.03-21,498.30

Finding the Fourth Proportional to 39,402.34, 54,375.03 and 21,498.30

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Solution

The fourth proportional to 39,402.34, 54,375.03 and 21,498.30 is: 29,667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,402.34 : 54,375.03 = 21,498.30 : x
  2. Step 2: Convert to fraction form
    39,402.34/54,375.03 = 21,498.30/x
  3. Step 3: Cross multiply
    39,402.34x = 54,375.03 × 21,498.30
  4. Step 4: Simplify right side
    39,402.34x = 1,168,970,707.45
  5. Step 5: Solve for x
    x = 1,168,970,707.45/39,402.34
  6. Step 6: Final answer
    x = 29,667.55

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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.