Home / 18,897,763.20-28,346,644.80-13,124,860.80

Finding the Fourth Proportional to 18,897,763.20, 28,346,644.80 and 13,124,860.80

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Solution

The fourth proportional to 18,897,763.20, 28,346,644.80 and 13,124,860.80 is: 19,687,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897,763.20 : 28,346,644.80 = 13,124,860.80 : x
  2. Step 2: Convert to fraction form
    18,897,763.20/28,346,644.80 = 13,124,860.80/x
  3. Step 3: Cross multiply
    18,897,763.20x = 28,346,644.80 × 13,124,860.80
  4. Step 4: Simplify right side
    18,897,763.20x = 372,045,767,147,043.88
  5. Step 5: Solve for x
    x = 372,045,767,147,043.88/18,897,763.20
  6. Step 6: Final answer
    x = 19,687,291.20

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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.