Home / 20,520,446.40-28,315,726.74-11,821,435.20

Finding the Fourth Proportional to 20,520,446.40, 28,315,726.74 and 11,821,435.20

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Solution

The fourth proportional to 20,520,446.40, 28,315,726.74 and 11,821,435.20 is: 16,312,146.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520,446.40 : 28,315,726.74 = 11,821,435.20 : x
  2. Step 2: Convert to fraction form
    20,520,446.40/28,315,726.74 = 11,821,435.20/x
  3. Step 3: Cross multiply
    20,520,446.40x = 28,315,726.74 × 11,821,435.20
  4. Step 4: Simplify right side
    20,520,446.40x = 334,732,528,797,817.19
  5. Step 5: Solve for x
    x = 334,732,528,797,817.19/20,520,446.40
  6. Step 6: Final answer
    x = 16,312,146.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.