Home / 28,420,768.69-42,614,834.60-11,128,723.54

Finding the Fourth Proportional to 28,420,768.69, 42,614,834.60 and 11,128,723.54

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Solution

The fourth proportional to 28,420,768.69, 42,614,834.60 and 11,128,723.54 is: 16,686,695.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420,768.69 : 42,614,834.60 = 11,128,723.54 : x
  2. Step 2: Convert to fraction form
    28,420,768.69/42,614,834.60 = 11,128,723.54/x
  3. Step 3: Cross multiply
    28,420,768.69x = 42,614,834.60 × 11,128,723.54
  4. Step 4: Simplify right side
    28,420,768.69x = 474,248,712,966,226.44
  5. Step 5: Solve for x
    x = 474,248,712,966,226.44/28,420,768.69
  6. Step 6: Final answer
    x = 16,686,695.50

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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.