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Finding the Fourth Proportional to 30,579.43, 45,873.72 and 10,856.34

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Solution

The fourth proportional to 30,579.43, 45,873.72 and 10,856.34 is: 16,286.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.43 : 45,873.72 = 10,856.34 : x
  2. Step 2: Convert to fraction form
    30,579.43/45,873.72 = 10,856.34/x
  3. Step 3: Cross multiply
    30,579.43x = 45,873.72 × 10,856.34
  4. Step 4: Simplify right side
    30,579.43x = 498,020,701.38
  5. Step 5: Solve for x
    x = 498,020,701.38/30,579.43
  6. Step 6: Final answer
    x = 16,286.13

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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.