Home / 21,060,460.80-31,590,691.20-12,077,625.60

Finding the Fourth Proportional to 21,060,460.80, 31,590,691.20 and 12,077,625.60

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Solution

The fourth proportional to 21,060,460.80, 31,590,691.20 and 12,077,625.60 is: 18,116,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060,460.80 : 31,590,691.20 = 12,077,625.60 : x
  2. Step 2: Convert to fraction form
    21,060,460.80/31,590,691.20 = 12,077,625.60/x
  3. Step 3: Cross multiply
    21,060,460.80x = 31,590,691.20 × 12,077,625.60
  4. Step 4: Simplify right side
    21,060,460.80x = 381,540,540,758,814.69
  5. Step 5: Solve for x
    x = 381,540,540,758,814.69/21,060,460.80
  6. Step 6: Final answer
    x = 18,116,438.40

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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.