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Finding the Fourth Proportional to 25,629.60, 38,444.40 and 21,401.40

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Solution

The fourth proportional to 25,629.60, 38,444.40 and 21,401.40 is: 32,102.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,629.60 : 38,444.40 = 21,401.40 : x
  2. Step 2: Convert to fraction form
    25,629.60/38,444.40 = 21,401.40/x
  3. Step 3: Cross multiply
    25,629.60x = 38,444.40 × 21,401.40
  4. Step 4: Simplify right side
    25,629.60x = 822,763,982.16
  5. Step 5: Solve for x
    x = 822,763,982.16/25,629.60
  6. Step 6: Final answer
    x = 32,102.10

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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.