Home / 13,172,042.10-19,745,621.55-7,784,829.30

Finding the Fourth Proportional to 13,172,042.10, 19,745,621.55 and 7,784,829.30

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Solution

The fourth proportional to 13,172,042.10, 19,745,621.55 and 7,784,829.30 is: 11,669,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172,042.10 : 19,745,621.55 = 7,784,829.30 : x
  2. Step 2: Convert to fraction form
    13,172,042.10/19,745,621.55 = 7,784,829.30/x
  3. Step 3: Cross multiply
    13,172,042.10x = 19,745,621.55 × 7,784,829.30
  4. Step 4: Simplify right side
    13,172,042.10x = 153,716,293,189,151.41
  5. Step 5: Solve for x
    x = 153,716,293,189,151.41/13,172,042.10
  6. Step 6: Final answer
    x = 11,669,890.82

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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.