Home / 18,281.70-27,420.39-4,771.98

Finding the Fourth Proportional to 18,281.70, 27,420.39 and 4,771.98

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Solution

The fourth proportional to 18,281.70, 27,420.39 and 4,771.98 is: 7,157.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,281.70 : 27,420.39 = 4,771.98 : x
  2. Step 2: Convert to fraction form
    18,281.70/27,420.39 = 4,771.98/x
  3. Step 3: Cross multiply
    18,281.70x = 27,420.39 × 4,771.98
  4. Step 4: Simplify right side
    18,281.70x = 130,849,552.67
  5. Step 5: Solve for x
    x = 130,849,552.67/18,281.70
  6. Step 6: Final answer
    x = 7,157.41

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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.