Home / 15,891,012.80-21,929,514.72-8,647,720.64

Finding the Fourth Proportional to 15,891,012.80, 21,929,514.72 and 8,647,720.64

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Solution

The fourth proportional to 15,891,012.80, 21,929,514.72 and 8,647,720.64 is: 11,933,809.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891,012.80 : 21,929,514.72 = 8,647,720.64 : x
  2. Step 2: Convert to fraction form
    15,891,012.80/21,929,514.72 = 8,647,720.64/x
  3. Step 3: Cross multiply
    15,891,012.80x = 21,929,514.72 × 8,647,720.64
  4. Step 4: Simplify right side
    15,891,012.80x = 189,640,317,069,327.81
  5. Step 5: Solve for x
    x = 189,640,317,069,327.81/15,891,012.80
  6. Step 6: Final answer
    x = 11,933,809.35

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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.