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Finding the Fourth Proportional to 17,608,317.60, 26,412,476.40 and 12,128,570.40

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Solution

The fourth proportional to 17,608,317.60, 26,412,476.40 and 12,128,570.40 is: 18,192,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,608,317.60 : 26,412,476.40 = 12,128,570.40 : x
  2. Step 2: Convert to fraction form
    17,608,317.60/26,412,476.40 = 12,128,570.40/x
  3. Step 3: Cross multiply
    17,608,317.60x = 26,412,476.40 × 12,128,570.40
  4. Step 4: Simplify right side
    17,608,317.60x = 320,345,579,455,738.56
  5. Step 5: Solve for x
    x = 320,345,579,455,738.56/17,608,317.60
  6. Step 6: Final answer
    x = 18,192,855.60

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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.