Home / 13,421,084.74-18,522,764.31-7,621,729.36

Finding the Fourth Proportional to 13,421,084.74, 18,522,764.31 and 7,621,729.36

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Solution

The fourth proportional to 13,421,084.74, 18,522,764.31 and 7,621,729.36 is: 10,518,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421,084.74 : 18,522,764.31 = 7,621,729.36 : x
  2. Step 2: Convert to fraction form
    13,421,084.74/18,522,764.31 = 7,621,729.36/x
  3. Step 3: Cross multiply
    13,421,084.74x = 18,522,764.31 × 7,621,729.36
  4. Step 4: Simplify right side
    13,421,084.74x = 141,175,496,569,887.12
  5. Step 5: Solve for x
    x = 141,175,496,569,887.12/13,421,084.74
  6. Step 6: Final answer
    x = 10,518,933.40

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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.