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Finding the Fourth Proportional to 15,143.12, 22,713.76 and 5,653.62

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Solution

The fourth proportional to 15,143.12, 22,713.76 and 5,653.62 is: 8,480.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.12 : 22,713.76 = 5,653.62 : x
  2. Step 2: Convert to fraction form
    15,143.12/22,713.76 = 5,653.62/x
  3. Step 3: Cross multiply
    15,143.12x = 22,713.76 × 5,653.62
  4. Step 4: Simplify right side
    15,143.12x = 128,414,967.81
  5. Step 5: Solve for x
    x = 128,414,967.81/15,143.12
  6. Step 6: Final answer
    x = 8,480.09

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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.