Home / 20,871,036.80-31,311,998.40-8,091,958.40

Finding the Fourth Proportional to 20,871,036.80, 31,311,998.40 and 8,091,958.40

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Solution

The fourth proportional to 20,871,036.80, 31,311,998.40 and 8,091,958.40 is: 12,140,048.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,871,036.80 : 31,311,998.40 = 8,091,958.40 : x
  2. Step 2: Convert to fraction form
    20,871,036.80/31,311,998.40 = 8,091,958.40/x
  3. Step 3: Cross multiply
    20,871,036.80x = 31,311,998.40 × 8,091,958.40
  4. Step 4: Simplify right side
    20,871,036.80x = 253,375,388,473,666.56
  5. Step 5: Solve for x
    x = 253,375,388,473,666.56/20,871,036.80
  6. Step 6: Final answer
    x = 12,140,048.00

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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.