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Finding the Fourth Proportional to 25,605.60, 38,408.40 and 25,216.80

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Solution

The fourth proportional to 25,605.60, 38,408.40 and 25,216.80 is: 37,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,605.60 : 38,408.40 = 25,216.80 : x
  2. Step 2: Convert to fraction form
    25,605.60/38,408.40 = 25,216.80/x
  3. Step 3: Cross multiply
    25,605.60x = 38,408.40 × 25,216.80
  4. Step 4: Simplify right side
    25,605.60x = 968,536,941.12
  5. Step 5: Solve for x
    x = 968,536,941.12/25,605.60
  6. Step 6: Final answer
    x = 37,825.20

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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.