Home / 12,478,628.16-18,718,607.04-3,959,631.36

Finding the Fourth Proportional to 12,478,628.16, 18,718,607.04 and 3,959,631.36

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Solution

The fourth proportional to 12,478,628.16, 18,718,607.04 and 3,959,631.36 is: 5,939,657.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,628.16 : 18,718,607.04 = 3,959,631.36 : x
  2. Step 2: Convert to fraction form
    12,478,628.16/18,718,607.04 = 3,959,631.36/x
  3. Step 3: Cross multiply
    12,478,628.16x = 18,718,607.04 × 3,959,631.36
  4. Step 4: Simplify right side
    12,478,628.16x = 74,118,783,451,100.77
  5. Step 5: Solve for x
    x = 74,118,783,451,100.77/12,478,628.16
  6. Step 6: Final answer
    x = 5,939,657.99

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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.