Home / 28,381.98-42,529.22-12,584.54

Finding the Fourth Proportional to 28,381.98, 42,529.22 and 12,584.54

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Solution

The fourth proportional to 28,381.98, 42,529.22 and 12,584.54 is: 18,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,381.98 : 42,529.22 = 12,584.54 : x
  2. Step 2: Convert to fraction form
    28,381.98/42,529.22 = 12,584.54/x
  3. Step 3: Cross multiply
    28,381.98x = 42,529.22 × 12,584.54
  4. Step 4: Simplify right side
    28,381.98x = 535,210,670.26
  5. Step 5: Solve for x
    x = 535,210,670.26/28,381.98
  6. Step 6: Final answer
    x = 18,857.41

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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.