Home / 21,191,929.20-31,755,234.60-15,775,167.60

Finding the Fourth Proportional to 21,191,929.20, 31,755,234.60 and 15,775,167.60

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Solution

The fourth proportional to 21,191,929.20, 31,755,234.60 and 15,775,167.60 is: 23,638,440.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191,929.20 : 31,755,234.60 = 15,775,167.60 : x
  2. Step 2: Convert to fraction form
    21,191,929.20/31,755,234.60 = 15,775,167.60/x
  3. Step 3: Cross multiply
    21,191,929.20x = 31,755,234.60 × 15,775,167.60
  4. Step 4: Simplify right side
    21,191,929.20x = 500,944,147,992,319
  5. Step 5: Solve for x
    x = 500,944,147,992,319/21,191,929.20
  6. Step 6: Final answer
    x = 23,638,440.05

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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.