Home / 20,487,071.36-28,272,100.44-11,319,648.80

Finding the Fourth Proportional to 20,487,071.36, 28,272,100.44 and 11,319,648.80

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Solution

The fourth proportional to 20,487,071.36, 28,272,100.44 and 11,319,648.80 is: 15,621,083.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487,071.36 : 28,272,100.44 = 11,319,648.80 : x
  2. Step 2: Convert to fraction form
    20,487,071.36/28,272,100.44 = 11,319,648.80/x
  3. Step 3: Cross multiply
    20,487,071.36x = 28,272,100.44 × 11,319,648.80
  4. Step 4: Simplify right side
    20,487,071.36x = 320,030,247,819,125.50
  5. Step 5: Solve for x
    x = 320,030,247,819,125.50/20,487,071.36
  6. Step 6: Final answer
    x = 15,621,083.28

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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.