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Finding the Fourth Proportional to 19,956.13, 29,873.06 and 12,922.15

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Solution

The fourth proportional to 19,956.13, 29,873.06 and 12,922.15 is: 19,343.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956.13 : 29,873.06 = 12,922.15 : x
  2. Step 2: Convert to fraction form
    19,956.13/29,873.06 = 12,922.15/x
  3. Step 3: Cross multiply
    19,956.13x = 29,873.06 × 12,922.15
  4. Step 4: Simplify right side
    19,956.13x = 386,024,200.14
  5. Step 5: Solve for x
    x = 386,024,200.14/19,956.13
  6. Step 6: Final answer
    x = 19,343.64

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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.