Home / 14,743.28-20,345.46-8,455.16

Finding the Fourth Proportional to 14,743.28, 20,345.46 and 8,455.16

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Solution

The fourth proportional to 14,743.28, 20,345.46 and 8,455.16 is: 11,667.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,743.28 : 20,345.46 = 8,455.16 : x
  2. Step 2: Convert to fraction form
    14,743.28/20,345.46 = 8,455.16/x
  3. Step 3: Cross multiply
    14,743.28x = 20,345.46 × 8,455.16
  4. Step 4: Simplify right side
    14,743.28x = 172,024,119.57
  5. Step 5: Solve for x
    x = 172,024,119.57/14,743.28
  6. Step 6: Final answer
    x = 11,667.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.