Home / 30,397,896-45,590,006.21-13,987,439.06

Finding the Fourth Proportional to 30,397,896, 45,590,006.21 and 13,987,439.06

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Solution

The fourth proportional to 30,397,896, 45,590,006.21 and 13,987,439.06 is: 20,978,012.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,397,896 : 45,590,006.21 = 13,987,439.06 : x
  2. Step 2: Convert to fraction form
    30,397,896/45,590,006.21 = 13,987,439.06/x
  3. Step 3: Cross multiply
    30,397,896x = 45,590,006.21 × 13,987,439.06
  4. Step 4: Simplify right side
    30,397,896x = 637,687,433,309,509.25
  5. Step 5: Solve for x
    x = 637,687,433,309,509.25/30,397,896
  6. Step 6: Final answer
    x = 20,978,012.21

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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.