Home / 20,830,390.80-31,240,920.60-13,692,022.80

Finding the Fourth Proportional to 20,830,390.80, 31,240,920.60 and 13,692,022.80

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Solution

The fourth proportional to 20,830,390.80, 31,240,920.60 and 13,692,022.80 is: 20,534,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830,390.80 : 31,240,920.60 = 13,692,022.80 : x
  2. Step 2: Convert to fraction form
    20,830,390.80/31,240,920.60 = 13,692,022.80/x
  3. Step 3: Cross multiply
    20,830,390.80x = 31,240,920.60 × 13,692,022.80
  4. Step 4: Simplify right side
    20,830,390.80x = 427,751,397,148,189.75
  5. Step 5: Solve for x
    x = 427,751,397,148,189.75/20,830,390.80
  6. Step 6: Final answer
    x = 20,534,967.45

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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.