Home / 15,853,821.12-21,878,385.12-8,610,477.12

Finding the Fourth Proportional to 15,853,821.12, 21,878,385.12 and 8,610,477.12

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Solution

The fourth proportional to 15,853,821.12, 21,878,385.12 and 8,610,477.12 is: 11,882,519.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853,821.12 : 21,878,385.12 = 8,610,477.12 : x
  2. Step 2: Convert to fraction form
    15,853,821.12/21,878,385.12 = 8,610,477.12/x
  3. Step 3: Cross multiply
    15,853,821.12x = 21,878,385.12 × 8,610,477.12
  4. Step 4: Simplify right side
    15,853,821.12x = 188,383,334,498,308.44
  5. Step 5: Solve for x
    x = 188,383,334,498,308.44/15,853,821.12
  6. Step 6: Final answer
    x = 11,882,519.24

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1.5x scale

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.