Home / 21,024,028.80-31,477,060.80-20,434,204.80

Finding the Fourth Proportional to 21,024,028.80, 31,477,060.80 and 20,434,204.80

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Solution

The fourth proportional to 21,024,028.80, 31,477,060.80 and 20,434,204.80 is: 30,593,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024,028.80 : 31,477,060.80 = 20,434,204.80 : x
  2. Step 2: Convert to fraction form
    21,024,028.80/31,477,060.80 = 20,434,204.80/x
  3. Step 3: Cross multiply
    21,024,028.80x = 31,477,060.80 × 20,434,204.80
  4. Step 4: Simplify right side
    21,024,028.80x = 643,208,706,889,251.88
  5. Step 5: Solve for x
    x = 643,208,706,889,251.88/21,024,028.80
  6. Step 6: Final answer
    x = 30,593,979.54

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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.