Home / 18,861,428.40-28,292,142.60-5,214,548.40

Finding the Fourth Proportional to 18,861,428.40, 28,292,142.60 and 5,214,548.40

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Solution

The fourth proportional to 18,861,428.40, 28,292,142.60 and 5,214,548.40 is: 7,821,822.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861,428.40 : 28,292,142.60 = 5,214,548.40 : x
  2. Step 2: Convert to fraction form
    18,861,428.40/28,292,142.60 = 5,214,548.40/x
  3. Step 3: Cross multiply
    18,861,428.40x = 28,292,142.60 × 5,214,548.40
  4. Step 4: Simplify right side
    18,861,428.40x = 147,530,746,927,401.84
  5. Step 5: Solve for x
    x = 147,530,746,927,401.84/18,861,428.40
  6. Step 6: Final answer
    x = 7,821,822.60

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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.