Home / 20,412,647.80-30,618,971.70-18,782,895.40

Finding the Fourth Proportional to 20,412,647.80, 30,618,971.70 and 18,782,895.40

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Solution

The fourth proportional to 20,412,647.80, 30,618,971.70 and 18,782,895.40 is: 28,174,343.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412,647.80 : 30,618,971.70 = 18,782,895.40 : x
  2. Step 2: Convert to fraction form
    20,412,647.80/30,618,971.70 = 18,782,895.40/x
  3. Step 3: Cross multiply
    20,412,647.80x = 30,618,971.70 × 18,782,895.40
  4. Step 4: Simplify right side
    20,412,647.80x = 575,112,942,696,660.12
  5. Step 5: Solve for x
    x = 575,112,942,696,660.12/20,412,647.80
  6. Step 6: Final answer
    x = 28,174,343.10

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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.