Home / 21,000,561.54-28,987,179.75-12,182,241.30

Finding the Fourth Proportional to 21,000,561.54, 28,987,179.75 and 12,182,241.30

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Solution

The fourth proportional to 21,000,561.54, 28,987,179.75 and 12,182,241.30 is: 16,815,208.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,561.54 : 28,987,179.75 = 12,182,241.30 : x
  2. Step 2: Convert to fraction form
    21,000,561.54/28,987,179.75 = 12,182,241.30/x
  3. Step 3: Cross multiply
    21,000,561.54x = 28,987,179.75 × 12,182,241.30
  4. Step 4: Simplify right side
    21,000,561.54x = 353,128,818,320,973.69
  5. Step 5: Solve for x
    x = 353,128,818,320,973.69/21,000,561.54
  6. Step 6: Final answer
    x = 16,815,208.38

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1.5x scale

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.