Home / 25,311.64-37,966.38-7,780.72

Finding the Fourth Proportional to 25,311.64, 37,966.38 and 7,780.72

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Solution

The fourth proportional to 25,311.64, 37,966.38 and 7,780.72 is: 11,670.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,311.64 : 37,966.38 = 7,780.72 : x
  2. Step 2: Convert to fraction form
    25,311.64/37,966.38 = 7,780.72/x
  3. Step 3: Cross multiply
    25,311.64x = 37,966.38 × 7,780.72
  4. Step 4: Simplify right side
    25,311.64x = 295,405,772.19
  5. Step 5: Solve for x
    x = 295,405,772.19/25,311.64
  6. Step 6: Final answer
    x = 11,670.75

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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.