Home / 20,718,661.05-31,072,688.67-6,142,171.92

Finding the Fourth Proportional to 20,718,661.05, 31,072,688.67 and 6,142,171.92

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Solution

The fourth proportional to 20,718,661.05, 31,072,688.67 and 6,142,171.92 is: 9,211,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718,661.05 : 31,072,688.67 = 6,142,171.92 : x
  2. Step 2: Convert to fraction form
    20,718,661.05/31,072,688.67 = 6,142,171.92/x
  3. Step 3: Cross multiply
    20,718,661.05x = 31,072,688.67 × 6,142,171.92
  4. Step 4: Simplify right side
    20,718,661.05x = 190,853,795,827,776.16
  5. Step 5: Solve for x
    x = 190,853,795,827,776.16/20,718,661.05
  6. Step 6: Final answer
    x = 9,211,685.80

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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.