Home / 21,087,042.60-31,567,578.30-12,562,991.40

Finding the Fourth Proportional to 21,087,042.60, 31,567,578.30 and 12,562,991.40

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Solution

The fourth proportional to 21,087,042.60, 31,567,578.30 and 12,562,991.40 is: 18,806,962.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087,042.60 : 31,567,578.30 = 12,562,991.40 : x
  2. Step 2: Convert to fraction form
    21,087,042.60/31,567,578.30 = 12,562,991.40/x
  3. Step 3: Cross multiply
    21,087,042.60x = 31,567,578.30 × 12,562,991.40
  4. Step 4: Simplify right side
    21,087,042.60x = 396,583,214,701,726.62
  5. Step 5: Solve for x
    x = 396,583,214,701,726.62/21,087,042.60
  6. Step 6: Final answer
    x = 18,806,962.28

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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.