Home / 28,467.49-42,702.80-11,829.20

Finding the Fourth Proportional to 28,467.49, 42,702.80 and 11,829.20

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Solution

The fourth proportional to 28,467.49, 42,702.80 and 11,829.20 is: 17,744.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,467.49 : 42,702.80 = 11,829.20 : x
  2. Step 2: Convert to fraction form
    28,467.49/42,702.80 = 11,829.20/x
  3. Step 3: Cross multiply
    28,467.49x = 42,702.80 × 11,829.20
  4. Step 4: Simplify right side
    28,467.49x = 505,140,009.37
  5. Step 5: Solve for x
    x = 505,140,009.37/28,467.49
  6. Step 6: Final answer
    x = 17,744.45

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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.