Home / 21,011,818.09-31,453,083.97-13,709,554.29

Finding the Fourth Proportional to 21,011,818.09, 31,453,083.97 and 13,709,554.29

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Solution

The fourth proportional to 21,011,818.09, 31,453,083.97 and 13,709,554.29 is: 20,522,153.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011,818.09 : 31,453,083.97 = 13,709,554.29 : x
  2. Step 2: Convert to fraction form
    21,011,818.09/31,453,083.97 = 13,709,554.29/x
  3. Step 3: Cross multiply
    21,011,818.09x = 31,453,083.97 × 13,709,554.29
  4. Step 4: Simplify right side
    21,011,818.09x = 431,207,762,353,781.06
  5. Step 5: Solve for x
    x = 431,207,762,353,781.06/21,011,818.09
  6. Step 6: Final answer
    x = 20,522,153.80

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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.