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Finding the Fourth Proportional to 38,994.64, 58,478.16 and 12,694.48

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Solution

The fourth proportional to 38,994.64, 58,478.16 and 12,694.48 is: 19,037.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,994.64 : 58,478.16 = 12,694.48 : x
  2. Step 2: Convert to fraction form
    38,994.64/58,478.16 = 12,694.48/x
  3. Step 3: Cross multiply
    38,994.64x = 58,478.16 × 12,694.48
  4. Step 4: Simplify right side
    38,994.64x = 742,349,832.56
  5. Step 5: Solve for x
    x = 742,349,832.56/38,994.64
  6. Step 6: Final answer
    x = 19,037.23

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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.