Home / 28,271.30-42,418.04-12,467.80

Finding the Fourth Proportional to 28,271.30, 42,418.04 and 12,467.80

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Solution

The fourth proportional to 28,271.30, 42,418.04 and 12,467.80 is: 18,706.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.30 : 42,418.04 = 12,467.80 : x
  2. Step 2: Convert to fraction form
    28,271.30/42,418.04 = 12,467.80/x
  3. Step 3: Cross multiply
    28,271.30x = 42,418.04 × 12,467.80
  4. Step 4: Simplify right side
    28,271.30x = 528,859,639.11
  5. Step 5: Solve for x
    x = 528,859,639.11/28,271.30
  6. Step 6: Final answer
    x = 18,706.59

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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.