Home / 28,230.88-42,344.16-11,586.64

Finding the Fourth Proportional to 28,230.88, 42,344.16 and 11,586.64

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Solution

The fourth proportional to 28,230.88, 42,344.16 and 11,586.64 is: 17,379.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230.88 : 42,344.16 = 11,586.64 : x
  2. Step 2: Convert to fraction form
    28,230.88/42,344.16 = 11,586.64/x
  3. Step 3: Cross multiply
    28,230.88x = 42,344.16 × 11,586.64
  4. Step 4: Simplify right side
    28,230.88x = 490,626,538.02
  5. Step 5: Solve for x
    x = 490,626,538.02/28,230.88
  6. Step 6: Final answer
    x = 17,379.07

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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.