Home / 21,143,077.20-31,714,615.80-18,539,672.40

Finding the Fourth Proportional to 21,143,077.20, 31,714,615.80 and 18,539,672.40

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Solution

The fourth proportional to 21,143,077.20, 31,714,615.80 and 18,539,672.40 is: 27,809,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143,077.20 : 31,714,615.80 = 18,539,672.40 : x
  2. Step 2: Convert to fraction form
    21,143,077.20/31,714,615.80 = 18,539,672.40/x
  3. Step 3: Cross multiply
    21,143,077.20x = 31,714,615.80 × 18,539,672.40
  4. Step 4: Simplify right side
    21,143,077.20x = 587,978,587,223,863.88
  5. Step 5: Solve for x
    x = 587,978,587,223,863.88/21,143,077.20
  6. Step 6: Final answer
    x = 27,809,508.60

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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.