Home / 15,004,701.70-20,706,508.65-8,129,183.56

Finding the Fourth Proportional to 15,004,701.70, 20,706,508.65 and 8,129,183.56

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Solution

The fourth proportional to 15,004,701.70, 20,706,508.65 and 8,129,183.56 is: 11,218,284.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004,701.70 : 20,706,508.65 = 8,129,183.56 : x
  2. Step 2: Convert to fraction form
    15,004,701.70/20,706,508.65 = 8,129,183.56/x
  3. Step 3: Cross multiply
    15,004,701.70x = 20,706,508.65 × 8,129,183.56
  4. Step 4: Simplify right side
    15,004,701.70x = 168,327,009,702,577.78
  5. Step 5: Solve for x
    x = 168,327,009,702,577.78/15,004,701.70
  6. Step 6: Final answer
    x = 11,218,284.31

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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.