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Finding the Fourth Proportional to 21,775,978.80, 32,674,465.80 and 15,372,442.80

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Solution

The fourth proportional to 21,775,978.80, 32,674,465.80 and 15,372,442.80 is: 23,066,074.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775,978.80 : 32,674,465.80 = 15,372,442.80 : x
  2. Step 2: Convert to fraction form
    21,775,978.80/32,674,465.80 = 15,372,442.80/x
  3. Step 3: Cross multiply
    21,775,978.80x = 32,674,465.80 × 15,372,442.80
  4. Step 4: Simplify right side
    21,775,978.80x = 502,286,356,531,056.25
  5. Step 5: Solve for x
    x = 502,286,356,531,056.25/21,775,978.80
  6. Step 6: Final answer
    x = 23,066,074.83

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.