Home / 12,281.58-18,420.50-4,488.57

Finding the Fourth Proportional to 12,281.58, 18,420.50 and 4,488.57

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Solution

The fourth proportional to 12,281.58, 18,420.50 and 4,488.57 is: 6,732.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.58 : 18,420.50 = 4,488.57 : x
  2. Step 2: Convert to fraction form
    12,281.58/18,420.50 = 4,488.57/x
  3. Step 3: Cross multiply
    12,281.58x = 18,420.50 × 4,488.57
  4. Step 4: Simplify right side
    12,281.58x = 82,681,681.24
  5. Step 5: Solve for x
    x = 82,681,681.24/12,281.58
  6. Step 6: Final answer
    x = 6,732.17

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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.