Home / 12,470,731.20-18,706,096.80-7,662,830.40

Finding the Fourth Proportional to 12,470,731.20, 18,706,096.80 and 7,662,830.40

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Solution

The fourth proportional to 12,470,731.20, 18,706,096.80 and 7,662,830.40 is: 11,494,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,470,731.20 : 18,706,096.80 = 7,662,830.40 : x
  2. Step 2: Convert to fraction form
    12,470,731.20/18,706,096.80 = 7,662,830.40/x
  3. Step 3: Cross multiply
    12,470,731.20x = 18,706,096.80 × 7,662,830.40
  4. Step 4: Simplify right side
    12,470,731.20x = 143,341,647,224,382.72
  5. Step 5: Solve for x
    x = 143,341,647,224,382.72/12,470,731.20
  6. Step 6: Final answer
    x = 11,494,245.60

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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.