Home / 21,190,278.80-31,785,418.20-10,414,492.40

Finding the Fourth Proportional to 21,190,278.80, 31,785,418.20 and 10,414,492.40

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Solution

The fourth proportional to 21,190,278.80, 31,785,418.20 and 10,414,492.40 is: 15,621,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190,278.80 : 31,785,418.20 = 10,414,492.40 : x
  2. Step 2: Convert to fraction form
    21,190,278.80/31,785,418.20 = 10,414,492.40/x
  3. Step 3: Cross multiply
    21,190,278.80x = 31,785,418.20 × 10,414,492.40
  4. Step 4: Simplify right side
    21,190,278.80x = 331,028,996,274,721.69
  5. Step 5: Solve for x
    x = 331,028,996,274,721.69/21,190,278.80
  6. Step 6: Final answer
    x = 15,621,738.60

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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.