Home / 21,131,999.30-31,718,994.15-10,361,461.70

Finding the Fourth Proportional to 21,131,999.30, 31,718,994.15 and 10,361,461.70

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Solution

The fourth proportional to 21,131,999.30, 31,718,994.15 and 10,361,461.70 is: 15,552,486.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131,999.30 : 31,718,994.15 = 10,361,461.70 : x
  2. Step 2: Convert to fraction form
    21,131,999.30/31,718,994.15 = 10,361,461.70/x
  3. Step 3: Cross multiply
    21,131,999.30x = 31,718,994.15 × 10,361,461.70
  4. Step 4: Simplify right side
    21,131,999.30x = 328,655,143,047,749
  5. Step 5: Solve for x
    x = 328,655,143,047,749/21,131,999.30
  6. Step 6: Final answer
    x = 15,552,486.94

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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.