Home / 18,947,643.60-28,415,244.60-6,978,824.40

Finding the Fourth Proportional to 18,947,643.60, 28,415,244.60 and 6,978,824.40

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Solution

The fourth proportional to 18,947,643.60, 28,415,244.60 and 6,978,824.40 is: 10,465,945.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947,643.60 : 28,415,244.60 = 6,978,824.40 : x
  2. Step 2: Convert to fraction form
    18,947,643.60/28,415,244.60 = 6,978,824.40/x
  3. Step 3: Cross multiply
    18,947,643.60x = 28,415,244.60 × 6,978,824.40
  4. Step 4: Simplify right side
    18,947,643.60x = 198,305,002,346,448.25
  5. Step 5: Solve for x
    x = 198,305,002,346,448.25/18,947,643.60
  6. Step 6: Final answer
    x = 10,465,945.35

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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.