Home / 20,218,971.60-30,328,457.40-11,243,523.60

Finding the Fourth Proportional to 20,218,971.60, 30,328,457.40 and 11,243,523.60

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Solution

The fourth proportional to 20,218,971.60, 30,328,457.40 and 11,243,523.60 is: 16,865,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,971.60 : 30,328,457.40 = 11,243,523.60 : x
  2. Step 2: Convert to fraction form
    20,218,971.60/30,328,457.40 = 11,243,523.60/x
  3. Step 3: Cross multiply
    20,218,971.60x = 30,328,457.40 × 11,243,523.60
  4. Step 4: Simplify right side
    20,218,971.60x = 340,998,726,528,494.62
  5. Step 5: Solve for x
    x = 340,998,726,528,494.62/20,218,971.60
  6. Step 6: Final answer
    x = 16,865,285.40

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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.