Home / 21,212,697.42-31,841,310.65-18,799,290.99

Finding the Fourth Proportional to 21,212,697.42, 31,841,310.65 and 18,799,290.99

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Solution

The fourth proportional to 21,212,697.42, 31,841,310.65 and 18,799,290.99 is: 28,218,667.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212,697.42 : 31,841,310.65 = 18,799,290.99 : x
  2. Step 2: Convert to fraction form
    21,212,697.42/31,841,310.65 = 18,799,290.99/x
  3. Step 3: Cross multiply
    21,212,697.42x = 31,841,310.65 × 18,799,290.99
  4. Step 4: Simplify right side
    21,212,697.42x = 598,594,064,318,339.50
  5. Step 5: Solve for x
    x = 598,594,064,318,339.50/21,212,697.42
  6. Step 6: Final answer
    x = 28,218,667.93

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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.