Home / 21,881,272.78-30,197,318.79-12,590,254.52

Finding the Fourth Proportional to 21,881,272.78, 30,197,318.79 and 12,590,254.52

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Solution

The fourth proportional to 21,881,272.78, 30,197,318.79 and 12,590,254.52 is: 17,375,220.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,881,272.78 : 30,197,318.79 = 12,590,254.52 : x
  2. Step 2: Convert to fraction form
    21,881,272.78/30,197,318.79 = 12,590,254.52/x
  3. Step 3: Cross multiply
    21,881,272.78x = 30,197,318.79 × 12,590,254.52
  4. Step 4: Simplify right side
    21,881,272.78x = 380,191,929,397,145.25
  5. Step 5: Solve for x
    x = 380,191,929,397,145.25/21,881,272.78
  6. Step 6: Final answer
    x = 17,375,220.04

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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.