Home / 25,318.40-37,977.60-7,788.20

Finding the Fourth Proportional to 25,318.40, 37,977.60 and 7,788.20

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Solution

The fourth proportional to 25,318.40, 37,977.60 and 7,788.20 is: 11,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,318.40 : 37,977.60 = 7,788.20 : x
  2. Step 2: Convert to fraction form
    25,318.40/37,977.60 = 7,788.20/x
  3. Step 3: Cross multiply
    25,318.40x = 37,977.60 × 7,788.20
  4. Step 4: Simplify right side
    25,318.40x = 295,777,144.32
  5. Step 5: Solve for x
    x = 295,777,144.32/25,318.40
  6. Step 6: Final answer
    x = 11,682.30

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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.