Home / 28,105,406.20-42,173,855.70-11,928,604.60

Finding the Fourth Proportional to 28,105,406.20, 42,173,855.70 and 11,928,604.60

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Solution

The fourth proportional to 28,105,406.20, 42,173,855.70 and 11,928,604.60 is: 17,899,590.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,105,406.20 : 42,173,855.70 = 11,928,604.60 : x
  2. Step 2: Convert to fraction form
    28,105,406.20/42,173,855.70 = 11,928,604.60/x
  3. Step 3: Cross multiply
    28,105,406.20x = 42,173,855.70 × 11,928,604.60
  4. Step 4: Simplify right side
    28,105,406.20x = 503,075,249,102,756.25
  5. Step 5: Solve for x
    x = 503,075,249,102,756.25/28,105,406.20
  6. Step 6: Final answer
    x = 17,899,590.05

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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.