Home / 28,678.85-43,029.31-13,886.63

Finding the Fourth Proportional to 28,678.85, 43,029.31 and 13,886.63

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Solution

The fourth proportional to 28,678.85, 43,029.31 and 13,886.63 is: 20,835.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.85 : 43,029.31 = 13,886.63 : x
  2. Step 2: Convert to fraction form
    28,678.85/43,029.31 = 13,886.63/x
  3. Step 3: Cross multiply
    28,678.85x = 43,029.31 × 13,886.63
  4. Step 4: Simplify right side
    28,678.85x = 597,532,107.13
  5. Step 5: Solve for x
    x = 597,532,107.13/28,678.85
  6. Step 6: Final answer
    x = 20,835.29

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1.5x scale

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.