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Finding the Fourth Proportional to 15,181.74, 22,784.76 and 6,422.76

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Solution

The fourth proportional to 15,181.74, 22,784.76 and 6,422.76 is: 9,639.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,181.74 : 22,784.76 = 6,422.76 : x
  2. Step 2: Convert to fraction form
    15,181.74/22,784.76 = 6,422.76/x
  3. Step 3: Cross multiply
    15,181.74x = 22,784.76 × 6,422.76
  4. Step 4: Simplify right side
    15,181.74x = 146,341,045.14
  5. Step 5: Solve for x
    x = 146,341,045.14/15,181.74
  6. Step 6: Final answer
    x = 9,639.28

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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.