Home / 21,005,020.80-31,507,531.20-17,757,763.20

Finding the Fourth Proportional to 21,005,020.80, 31,507,531.20 and 17,757,763.20

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Solution

The fourth proportional to 21,005,020.80, 31,507,531.20 and 17,757,763.20 is: 26,636,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,020.80 : 31,507,531.20 = 17,757,763.20 : x
  2. Step 2: Convert to fraction form
    21,005,020.80/31,507,531.20 = 17,757,763.20/x
  3. Step 3: Cross multiply
    21,005,020.80x = 31,507,531.20 × 17,757,763.20
  4. Step 4: Simplify right side
    21,005,020.80x = 559,503,278,066,211.81
  5. Step 5: Solve for x
    x = 559,503,278,066,211.81/21,005,020.80
  6. Step 6: Final answer
    x = 26,636,644.80

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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.