Home / 15,415,505.88-21,271,847.73-8,538,703.08

Finding the Fourth Proportional to 15,415,505.88, 21,271,847.73 and 8,538,703.08

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Solution

The fourth proportional to 15,415,505.88, 21,271,847.73 and 8,538,703.08 is: 11,782,551.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415,505.88 : 21,271,847.73 = 8,538,703.08 : x
  2. Step 2: Convert to fraction form
    15,415,505.88/21,271,847.73 = 8,538,703.08/x
  3. Step 3: Cross multiply
    15,415,505.88x = 21,271,847.73 × 8,538,703.08
  4. Step 4: Simplify right side
    15,415,505.88x = 181,633,991,729,442
  5. Step 5: Solve for x
    x = 181,633,991,729,442/15,415,505.88
  6. Step 6: Final answer
    x = 11,782,551.49

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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.