Home / 12,518,128.40-18,789,634.20-6,135,587.60

Finding the Fourth Proportional to 12,518,128.40, 18,789,634.20 and 6,135,587.60

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Solution

The fourth proportional to 12,518,128.40, 18,789,634.20 and 6,135,587.60 is: 9,209,479.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518,128.40 : 18,789,634.20 = 6,135,587.60 : x
  2. Step 2: Convert to fraction form
    12,518,128.40/18,789,634.20 = 6,135,587.60/x
  3. Step 3: Cross multiply
    12,518,128.40x = 18,789,634.20 × 6,135,587.60
  4. Step 4: Simplify right side
    12,518,128.40x = 115,285,446,606,055.91
  5. Step 5: Solve for x
    x = 115,285,446,606,055.91/12,518,128.40
  6. Step 6: Final answer
    x = 9,209,479.48

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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.