Home / 15,685,899.76-21,646,072.88-8,716,555.84

Finding the Fourth Proportional to 15,685,899.76, 21,646,072.88 and 8,716,555.84

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Solution

The fourth proportional to 15,685,899.76, 21,646,072.88 and 8,716,555.84 is: 12,028,586.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685,899.76 : 21,646,072.88 = 8,716,555.84 : x
  2. Step 2: Convert to fraction form
    15,685,899.76/21,646,072.88 = 8,716,555.84/x
  3. Step 3: Cross multiply
    15,685,899.76x = 21,646,072.88 × 8,716,555.84
  4. Step 4: Simplify right side
    15,685,899.76x = 188,679,202,975,229.59
  5. Step 5: Solve for x
    x = 188,679,202,975,229.59/15,685,899.76
  6. Step 6: Final answer
    x = 12,028,586.56

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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.