Home / 13,705,037.70-20,557,556.55-8,639,924.10

Finding the Fourth Proportional to 13,705,037.70, 20,557,556.55 and 8,639,924.10

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Solution

The fourth proportional to 13,705,037.70, 20,557,556.55 and 8,639,924.10 is: 12,959,886.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705,037.70 : 20,557,556.55 = 8,639,924.10 : x
  2. Step 2: Convert to fraction form
    13,705,037.70/20,557,556.55 = 8,639,924.10/x
  3. Step 3: Cross multiply
    13,705,037.70x = 20,557,556.55 × 8,639,924.10
  4. Step 4: Simplify right side
    13,705,037.70x = 177,615,728,273,457.84
  5. Step 5: Solve for x
    x = 177,615,728,273,457.84/13,705,037.70
  6. Step 6: Final answer
    x = 12,959,886.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.