Home / 13,280,435.78-18,326,517.53-7,399,766.12

Finding the Fourth Proportional to 13,280,435.78, 18,326,517.53 and 7,399,766.12

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Solution

The fourth proportional to 13,280,435.78, 18,326,517.53 and 7,399,766.12 is: 10,211,407.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280,435.78 : 18,326,517.53 = 7,399,766.12 : x
  2. Step 2: Convert to fraction form
    13,280,435.78/18,326,517.53 = 7,399,766.12/x
  3. Step 3: Cross multiply
    13,280,435.78x = 18,326,517.53 × 7,399,766.12
  4. Step 4: Simplify right side
    13,280,435.78x = 135,611,943,516,080.09
  5. Step 5: Solve for x
    x = 135,611,943,516,080.09/13,280,435.78
  6. Step 6: Final answer
    x = 10,211,407.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.