Home / 20,739,101.80-31,108,652.70-18,219,677.80

Finding the Fourth Proportional to 20,739,101.80, 31,108,652.70 and 18,219,677.80

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Solution

The fourth proportional to 20,739,101.80, 31,108,652.70 and 18,219,677.80 is: 27,329,516.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,101.80 : 31,108,652.70 = 18,219,677.80 : x
  2. Step 2: Convert to fraction form
    20,739,101.80/31,108,652.70 = 18,219,677.80/x
  3. Step 3: Cross multiply
    20,739,101.80x = 31,108,652.70 × 18,219,677.80
  4. Step 4: Simplify right side
    20,739,101.80x = 566,789,628,986,100.12
  5. Step 5: Solve for x
    x = 566,789,628,986,100.12/20,739,101.80
  6. Step 6: Final answer
    x = 27,329,516.70

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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.