Home / 20,804,871.80-31,207,307.70-18,285,447.80

Finding the Fourth Proportional to 20,804,871.80, 31,207,307.70 and 18,285,447.80

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Solution

The fourth proportional to 20,804,871.80, 31,207,307.70 and 18,285,447.80 is: 27,428,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804,871.80 : 31,207,307.70 = 18,285,447.80 : x
  2. Step 2: Convert to fraction form
    20,804,871.80/31,207,307.70 = 18,285,447.80/x
  3. Step 3: Cross multiply
    20,804,871.80x = 31,207,307.70 × 18,285,447.80
  4. Step 4: Simplify right side
    20,804,871.80x = 570,639,595,926,888.12
  5. Step 5: Solve for x
    x = 570,639,595,926,888.12/20,804,871.80
  6. Step 6: Final answer
    x = 27,428,171.70

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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.