Home / 21,017,880.20-31,526,820.30-15,278,317.40

Finding the Fourth Proportional to 21,017,880.20, 31,526,820.30 and 15,278,317.40

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Solution

The fourth proportional to 21,017,880.20, 31,526,820.30 and 15,278,317.40 is: 22,917,476.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017,880.20 : 31,526,820.30 = 15,278,317.40 : x
  2. Step 2: Convert to fraction form
    21,017,880.20/31,526,820.30 = 15,278,317.40/x
  3. Step 3: Cross multiply
    21,017,880.20x = 31,526,820.30 × 15,278,317.40
  4. Step 4: Simplify right side
    21,017,880.20x = 481,676,767,156,163.25
  5. Step 5: Solve for x
    x = 481,676,767,156,163.25/21,017,880.20
  6. Step 6: Final answer
    x = 22,917,476.10

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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.