Home / 28,478.08-42,699.44-11,849.76

Finding the Fourth Proportional to 28,478.08, 42,699.44 and 11,849.76

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Solution

The fourth proportional to 28,478.08, 42,699.44 and 11,849.76 is: 17,767.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.08 : 42,699.44 = 11,849.76 : x
  2. Step 2: Convert to fraction form
    28,478.08/42,699.44 = 11,849.76/x
  3. Step 3: Cross multiply
    28,478.08x = 42,699.44 × 11,849.76
  4. Step 4: Simplify right side
    28,478.08x = 505,978,116.13
  5. Step 5: Solve for x
    x = 505,978,116.13/28,478.08
  6. Step 6: Final answer
    x = 17,767.28

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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.