Home / 20,481,242.80-30,721,864.20-18,426,337.60

Finding the Fourth Proportional to 20,481,242.80, 30,721,864.20 and 18,426,337.60

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Solution

The fourth proportional to 20,481,242.80, 30,721,864.20 and 18,426,337.60 is: 27,639,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481,242.80 : 30,721,864.20 = 18,426,337.60 : x
  2. Step 2: Convert to fraction form
    20,481,242.80/30,721,864.20 = 18,426,337.60/x
  3. Step 3: Cross multiply
    20,481,242.80x = 30,721,864.20 × 18,426,337.60
  4. Step 4: Simplify right side
    20,481,242.80x = 566,091,441,450,554
  5. Step 5: Solve for x
    x = 566,091,441,450,554/20,481,242.80
  6. Step 6: Final answer
    x = 27,639,506.40

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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.