Home / 12,355,979.60-18,533,969.40-10,214,469.20

Finding the Fourth Proportional to 12,355,979.60, 18,533,969.40 and 10,214,469.20

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Solution

The fourth proportional to 12,355,979.60, 18,533,969.40 and 10,214,469.20 is: 15,321,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355,979.60 : 18,533,969.40 = 10,214,469.20 : x
  2. Step 2: Convert to fraction form
    12,355,979.60/18,533,969.40 = 10,214,469.20/x
  3. Step 3: Cross multiply
    12,355,979.60x = 18,533,969.40 × 10,214,469.20
  4. Step 4: Simplify right side
    12,355,979.60x = 189,314,659,590,042.44
  5. Step 5: Solve for x
    x = 189,314,659,590,042.44/12,355,979.60
  6. Step 6: Final answer
    x = 15,321,703.80

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Similar ratio
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1.5x scale

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.