Home / 20,291,220.78-28,000,827.27-11,587,693.02

Finding the Fourth Proportional to 20,291,220.78, 28,000,827.27 and 11,587,693.02

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Solution

The fourth proportional to 20,291,220.78, 28,000,827.27 and 11,587,693.02 is: 15,990,412.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291,220.78 : 28,000,827.27 = 11,587,693.02 : x
  2. Step 2: Convert to fraction form
    20,291,220.78/28,000,827.27 = 11,587,693.02/x
  3. Step 3: Cross multiply
    20,291,220.78x = 28,000,827.27 × 11,587,693.02
  4. Step 4: Simplify right side
    20,291,220.78x = 324,464,990,710,804.62
  5. Step 5: Solve for x
    x = 324,464,990,710,804.62/20,291,220.78
  6. Step 6: Final answer
    x = 15,990,412.52

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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.