Home / 20,316,110.21-28,034,851.79-11,149,343.45

Finding the Fourth Proportional to 20,316,110.21, 28,034,851.79 and 11,149,343.45

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Solution

The fourth proportional to 20,316,110.21, 28,034,851.79 and 11,149,343.45 is: 15,385,336.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316,110.21 : 28,034,851.79 = 11,149,343.45 : x
  2. Step 2: Convert to fraction form
    20,316,110.21/28,034,851.79 = 11,149,343.45/x
  3. Step 3: Cross multiply
    20,316,110.21x = 28,034,851.79 × 11,149,343.45
  4. Step 4: Simplify right side
    20,316,110.21x = 312,570,190,980,636.31
  5. Step 5: Solve for x
    x = 312,570,190,980,636.31/20,316,110.21
  6. Step 6: Final answer
    x = 15,385,336.46

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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.