Home / 20,072,153.20-30,243,165.31-18,155,201.56

Finding the Fourth Proportional to 20,072,153.20, 30,243,165.31 and 18,155,201.56

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Solution

The fourth proportional to 20,072,153.20, 30,243,165.31 and 18,155,201.56 is: 27,354,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072,153.20 : 30,243,165.31 = 18,155,201.56 : x
  2. Step 2: Convert to fraction form
    20,072,153.20/30,243,165.31 = 18,155,201.56/x
  3. Step 3: Cross multiply
    20,072,153.20x = 30,243,165.31 × 18,155,201.56
  4. Step 4: Simplify right side
    20,072,153.20x = 549,070,762,015,449.81
  5. Step 5: Solve for x
    x = 549,070,762,015,449.81/20,072,153.20
  6. Step 6: Final answer
    x = 27,354,851.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.