Home / 18,702,969.40-28,054,454.10-12,320,428.60

Finding the Fourth Proportional to 18,702,969.40, 28,054,454.10 and 12,320,428.60

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Solution

The fourth proportional to 18,702,969.40, 28,054,454.10 and 12,320,428.60 is: 18,480,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702,969.40 : 28,054,454.10 = 12,320,428.60 : x
  2. Step 2: Convert to fraction form
    18,702,969.40/28,054,454.10 = 12,320,428.60/x
  3. Step 3: Cross multiply
    18,702,969.40x = 28,054,454.10 × 12,320,428.60
  4. Step 4: Simplify right side
    18,702,969.40x = 345,642,898,651,027.25
  5. Step 5: Solve for x
    x = 345,642,898,651,027.25/18,702,969.40
  6. Step 6: Final answer
    x = 18,480,642.90

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Why These Related Problems?

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