Home / 13,188,022.80-19,782,034.20-7,424,840.40

Finding the Fourth Proportional to 13,188,022.80, 19,782,034.20 and 7,424,840.40

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Solution

The fourth proportional to 13,188,022.80, 19,782,034.20 and 7,424,840.40 is: 11,137,260.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,022.80 : 19,782,034.20 = 7,424,840.40 : x
  2. Step 2: Convert to fraction form
    13,188,022.80/19,782,034.20 = 7,424,840.40/x
  3. Step 3: Cross multiply
    13,188,022.80x = 19,782,034.20 × 7,424,840.40
  4. Step 4: Simplify right side
    13,188,022.80x = 146,878,446,722,341.69
  5. Step 5: Solve for x
    x = 146,878,446,722,341.69/13,188,022.80
  6. Step 6: Final answer
    x = 11,137,260.60

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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.