Home / 12,382,432.20-18,536,906.70-9,201,659.40

Finding the Fourth Proportional to 12,382,432.20, 18,536,906.70 and 9,201,659.40

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Solution

The fourth proportional to 12,382,432.20, 18,536,906.70 and 9,201,659.40 is: 13,775,185.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382,432.20 : 18,536,906.70 = 9,201,659.40 : x
  2. Step 2: Convert to fraction form
    12,382,432.20/18,536,906.70 = 9,201,659.40/x
  3. Step 3: Cross multiply
    12,382,432.20x = 18,536,906.70 × 9,201,659.40
  4. Step 4: Simplify right side
    12,382,432.20x = 170,570,301,782,977.97
  5. Step 5: Solve for x
    x = 170,570,301,782,977.97/12,382,432.20
  6. Step 6: Final answer
    x = 13,775,185.60

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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.