Home / 20,781,027.60-31,171,541.40-19,789,004.40

Finding the Fourth Proportional to 20,781,027.60, 31,171,541.40 and 19,789,004.40

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Solution

The fourth proportional to 20,781,027.60, 31,171,541.40 and 19,789,004.40 is: 29,683,506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,027.60 : 31,171,541.40 = 19,789,004.40 : x
  2. Step 2: Convert to fraction form
    20,781,027.60/31,171,541.40 = 19,789,004.40/x
  3. Step 3: Cross multiply
    20,781,027.60x = 31,171,541.40 × 19,789,004.40
  4. Step 4: Simplify right side
    20,781,027.60x = 616,853,769,919,382.12
  5. Step 5: Solve for x
    x = 616,853,769,919,382.12/20,781,027.60
  6. Step 6: Final answer
    x = 29,683,506.60

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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.