Home / 13,969,959.40-20,912,948.70-8,287,258.60

Finding the Fourth Proportional to 13,969,959.40, 20,912,948.70 and 8,287,258.60

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Solution

The fourth proportional to 13,969,959.40, 20,912,948.70 and 8,287,258.60 is: 12,405,978.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969,959.40 : 20,912,948.70 = 8,287,258.60 : x
  2. Step 2: Convert to fraction form
    13,969,959.40/20,912,948.70 = 8,287,258.60/x
  3. Step 3: Cross multiply
    13,969,959.40x = 20,912,948.70 × 8,287,258.60
  4. Step 4: Simplify right side
    13,969,959.40x = 173,311,013,965,433.81
  5. Step 5: Solve for x
    x = 173,311,013,965,433.81/13,969,959.40
  6. Step 6: Final answer
    x = 12,405,978.36

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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.