Home / 20,493,403.48-28,293,939.90-12,769,792.60

Finding the Fourth Proportional to 20,493,403.48, 28,293,939.90 and 12,769,792.60

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Solution

The fourth proportional to 20,493,403.48, 28,293,939.90 and 12,769,792.60 is: 17,630,441.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,493,403.48 : 28,293,939.90 = 12,769,792.60 : x
  2. Step 2: Convert to fraction form
    20,493,403.48/28,293,939.90 = 12,769,792.60/x
  3. Step 3: Cross multiply
    20,493,403.48x = 28,293,939.90 × 12,769,792.60
  4. Step 4: Simplify right side
    20,493,403.48x = 361,307,744,359,864.69
  5. Step 5: Solve for x
    x = 361,307,744,359,864.69/20,493,403.48
  6. Step 6: Final answer
    x = 17,630,441.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.