Home / 13,138,045.20-18,129,457.80-7,336,479.60

Finding the Fourth Proportional to 13,138,045.20, 18,129,457.80 and 7,336,479.60

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Solution

The fourth proportional to 13,138,045.20, 18,129,457.80 and 7,336,479.60 is: 10,123,758.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138,045.20 : 18,129,457.80 = 7,336,479.60 : x
  2. Step 2: Convert to fraction form
    13,138,045.20/18,129,457.80 = 7,336,479.60/x
  3. Step 3: Cross multiply
    13,138,045.20x = 18,129,457.80 × 7,336,479.60
  4. Step 4: Simplify right side
    13,138,045.20x = 133,006,397,308,760.88
  5. Step 5: Solve for x
    x = 133,006,397,308,760.88/13,138,045.20
  6. Step 6: Final answer
    x = 10,123,758.54

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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.