Home / 21,684,781.11-29,924,718.75-12,392,244.78

Finding the Fourth Proportional to 21,684,781.11, 29,924,718.75 and 12,392,244.78

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Solution

The fourth proportional to 21,684,781.11, 29,924,718.75 and 12,392,244.78 is: 17,101,138.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,684,781.11 : 29,924,718.75 = 12,392,244.78 : x
  2. Step 2: Convert to fraction form
    21,684,781.11/29,924,718.75 = 12,392,244.78/x
  3. Step 3: Cross multiply
    21,684,781.11x = 29,924,718.75 × 12,392,244.78
  4. Step 4: Simplify right side
    21,684,781.11x = 370,834,439,722,655.62
  5. Step 5: Solve for x
    x = 370,834,439,722,655.62/21,684,781.11
  6. Step 6: Final answer
    x = 17,101,138.25

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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.