Home / 25,998.20-38,930.86-20,740.90

Finding the Fourth Proportional to 25,998.20, 38,930.86 and 20,740.90

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Solution

The fourth proportional to 25,998.20, 38,930.86 and 20,740.90 is: 31,058.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,998.20 : 38,930.86 = 20,740.90 : x
  2. Step 2: Convert to fraction form
    25,998.20/38,930.86 = 20,740.90/x
  3. Step 3: Cross multiply
    25,998.20x = 38,930.86 × 20,740.90
  4. Step 4: Simplify right side
    25,998.20x = 807,461,074.17
  5. Step 5: Solve for x
    x = 807,461,074.17/25,998.20
  6. Step 6: Final answer
    x = 31,058.35

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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.