Home / 20,187,513.20-30,281,269.80-18,628,619.60

Finding the Fourth Proportional to 20,187,513.20, 30,281,269.80 and 18,628,619.60

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Solution

The fourth proportional to 20,187,513.20, 30,281,269.80 and 18,628,619.60 is: 27,942,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187,513.20 : 30,281,269.80 = 18,628,619.60 : x
  2. Step 2: Convert to fraction form
    20,187,513.20/30,281,269.80 = 18,628,619.60/x
  3. Step 3: Cross multiply
    20,187,513.20x = 30,281,269.80 × 18,628,619.60
  4. Step 4: Simplify right side
    20,187,513.20x = 564,098,256,109,168.12
  5. Step 5: Solve for x
    x = 564,098,256,109,168.12/20,187,513.20
  6. Step 6: Final answer
    x = 27,942,929.40

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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.