Home / 20,718,667.62-31,072,698.54-6,142,178.52

Finding the Fourth Proportional to 20,718,667.62, 31,072,698.54 and 6,142,178.52

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Solution

The fourth proportional to 20,718,667.62, 31,072,698.54 and 6,142,178.52 is: 9,211,695.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718,667.62 : 31,072,698.54 = 6,142,178.52 : x
  2. Step 2: Convert to fraction form
    20,718,667.62/31,072,698.54 = 6,142,178.52/x
  3. Step 3: Cross multiply
    20,718,667.62x = 31,072,698.54 × 6,142,178.52
  4. Step 4: Simplify right side
    20,718,667.62x = 190,854,061,530,823.34
  5. Step 5: Solve for x
    x = 190,854,061,530,823.34/20,718,667.62
  6. Step 6: Final answer
    x = 9,211,695.71

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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.