Home / 20,489,978.08-28,276,740.12-11,323,211.32

Finding the Fourth Proportional to 20,489,978.08, 28,276,740.12 and 11,323,211.32

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Solution

The fourth proportional to 20,489,978.08, 28,276,740.12 and 11,323,211.32 is: 15,626,346.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489,978.08 : 28,276,740.12 = 11,323,211.32 : x
  2. Step 2: Convert to fraction form
    20,489,978.08/28,276,740.12 = 11,323,211.32/x
  3. Step 3: Cross multiply
    20,489,978.08x = 28,276,740.12 × 11,323,211.32
  4. Step 4: Simplify right side
    20,489,978.08x = 320,183,503,819,482.19
  5. Step 5: Solve for x
    x = 320,183,503,819,482.19/20,489,978.08
  6. Step 6: Final answer
    x = 15,626,346.82

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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.