Home / 25,985.11-38,967.90-20,503.03

Finding the Fourth Proportional to 25,985.11, 38,967.90 and 20,503.03

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Solution

The fourth proportional to 25,985.11, 38,967.90 and 20,503.03 is: 30,746.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,985.11 : 38,967.90 = 20,503.03 : x
  2. Step 2: Convert to fraction form
    25,985.11/38,967.90 = 20,503.03/x
  3. Step 3: Cross multiply
    25,985.11x = 38,967.90 × 20,503.03
  4. Step 4: Simplify right side
    25,985.11x = 798,960,022.74
  5. Step 5: Solve for x
    x = 798,960,022.74/25,985.11
  6. Step 6: Final answer
    x = 30,746.84

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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.