Home / 28,653.96-42,970-11,121.52

Finding the Fourth Proportional to 28,653.96, 42,970 and 11,121.52

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Solution

The fourth proportional to 28,653.96, 42,970 and 11,121.52 is: 16,678.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,653.96 : 42,970 = 11,121.52 : x
  2. Step 2: Convert to fraction form
    28,653.96/42,970 = 11,121.52/x
  3. Step 3: Cross multiply
    28,653.96x = 42,970 × 11,121.52
  4. Step 4: Simplify right side
    28,653.96x = 477,891,714.40
  5. Step 5: Solve for x
    x = 477,891,714.40/28,653.96
  6. Step 6: Final answer
    x = 16,678.03

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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.