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Finding the Fourth Proportional to 12,998.01, 17,920.98 and 10,847.64

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Solution

The fourth proportional to 12,998.01, 17,920.98 and 10,847.64 is: 14,956.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.01 : 17,920.98 = 10,847.64 : x
  2. Step 2: Convert to fraction form
    12,998.01/17,920.98 = 10,847.64/x
  3. Step 3: Cross multiply
    12,998.01x = 17,920.98 × 10,847.64
  4. Step 4: Simplify right side
    12,998.01x = 194,400,339.49
  5. Step 5: Solve for x
    x = 194,400,339.49/12,998.01
  6. Step 6: Final answer
    x = 14,956.16

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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.