Home / 13,421,083.74-18,522,762.93-7,621,728.36

Finding the Fourth Proportional to 13,421,083.74, 18,522,762.93 and 7,621,728.36

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Solution

The fourth proportional to 13,421,083.74, 18,522,762.93 and 7,621,728.36 is: 10,518,932.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421,083.74 : 18,522,762.93 = 7,621,728.36 : x
  2. Step 2: Convert to fraction form
    13,421,083.74/18,522,762.93 = 7,621,728.36/x
  3. Step 3: Cross multiply
    13,421,083.74x = 18,522,762.93 × 7,621,728.36
  4. Step 4: Simplify right side
    13,421,083.74x = 141,175,467,529,137.69
  5. Step 5: Solve for x
    x = 141,175,467,529,137.69/13,421,083.74
  6. Step 6: Final answer
    x = 10,518,932.02

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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.