Home / 12,289.07-18,437.69-4,891.55

Finding the Fourth Proportional to 12,289.07, 18,437.69 and 4,891.55

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Solution

The fourth proportional to 12,289.07, 18,437.69 and 4,891.55 is: 7,338.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.07 : 18,437.69 = 4,891.55 : x
  2. Step 2: Convert to fraction form
    12,289.07/18,437.69 = 4,891.55/x
  3. Step 3: Cross multiply
    12,289.07x = 18,437.69 × 4,891.55
  4. Step 4: Simplify right side
    12,289.07x = 90,188,802.56
  5. Step 5: Solve for x
    x = 90,188,802.56/12,289.07
  6. Step 6: Final answer
    x = 7,338.94

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1.5x scale

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.