Home / 20,783,769.60-31,171,979.52-5,638,881.60

Finding the Fourth Proportional to 20,783,769.60, 31,171,979.52 and 5,638,881.60

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Solution

The fourth proportional to 20,783,769.60, 31,171,979.52 and 5,638,881.60 is: 8,457,325.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783,769.60 : 31,171,979.52 = 5,638,881.60 : x
  2. Step 2: Convert to fraction form
    20,783,769.60/31,171,979.52 = 5,638,881.60/x
  3. Step 3: Cross multiply
    20,783,769.60x = 31,171,979.52 × 5,638,881.60
  4. Step 4: Simplify right side
    20,783,769.60x = 175,775,101,750,904.81
  5. Step 5: Solve for x
    x = 175,775,101,750,904.81/20,783,769.60
  6. Step 6: Final answer
    x = 8,457,325.36

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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.