Home / 25,345.20-38,017.80-21,408.60

Finding the Fourth Proportional to 25,345.20, 38,017.80 and 21,408.60

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Solution

The fourth proportional to 25,345.20, 38,017.80 and 21,408.60 is: 32,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,345.20 : 38,017.80 = 21,408.60 : x
  2. Step 2: Convert to fraction form
    25,345.20/38,017.80 = 21,408.60/x
  3. Step 3: Cross multiply
    25,345.20x = 38,017.80 × 21,408.60
  4. Step 4: Simplify right side
    25,345.20x = 813,907,873.08
  5. Step 5: Solve for x
    x = 813,907,873.08/25,345.20
  6. Step 6: Final answer
    x = 32,112.90

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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.