Home / 15,685,995,197.76-21,647,439,165.96-8,821,551,826.20

Finding the Fourth Proportional to 15,685,995,197.76, 21,647,439,165.96 and 8,821,551,826.20

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Solution

The fourth proportional to 15,685,995,197.76, 21,647,439,165.96 and 8,821,551,826.20 is: 12,174,172,189.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685,995,197.76 : 21,647,439,165.96 = 8,821,551,826.20 : x
  2. Step 2: Convert to fraction form
    15,685,995,197.76/21,647,439,165.96 = 8,821,551,826.20/x
  3. Step 3: Cross multiply
    15,685,995,197.76x = 21,647,439,165.96 × 8,821,551,826.20
  4. Step 4: Simplify right side
    15,685,995,197.76x = 190,964,006,507,027,857,408
  5. Step 5: Solve for x
    x = 190,964,006,507,027,857,408/15,685,995,197.76
  6. Step 6: Final answer
    x = 12,174,172,189.87

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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.