Home / 26,400.20-39,600.30-13,915.40

Finding the Fourth Proportional to 26,400.20, 39,600.30 and 13,915.40

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Solution

The fourth proportional to 26,400.20, 39,600.30 and 13,915.40 is: 20,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,400.20 : 39,600.30 = 13,915.40 : x
  2. Step 2: Convert to fraction form
    26,400.20/39,600.30 = 13,915.40/x
  3. Step 3: Cross multiply
    26,400.20x = 39,600.30 × 13,915.40
  4. Step 4: Simplify right side
    26,400.20x = 551,054,014.62
  5. Step 5: Solve for x
    x = 551,054,014.62/26,400.20
  6. Step 6: Final answer
    x = 20,873.10

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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.