Home / 20,789,993.60-31,151,812.80-17,405,878.40

Finding the Fourth Proportional to 20,789,993.60, 31,151,812.80 and 17,405,878.40

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Solution

The fourth proportional to 20,789,993.60, 31,151,812.80 and 17,405,878.40 is: 26,081,040.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,789,993.60 : 31,151,812.80 = 17,405,878.40 : x
  2. Step 2: Convert to fraction form
    20,789,993.60/31,151,812.80 = 17,405,878.40/x
  3. Step 3: Cross multiply
    20,789,993.60x = 31,151,812.80 × 17,405,878.40
  4. Step 4: Simplify right side
    20,789,993.60x = 542,224,665,536,363.50
  5. Step 5: Solve for x
    x = 542,224,665,536,363.50/20,789,993.60
  6. Step 6: Final answer
    x = 26,081,040.52

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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.