Home / 28,529.68-42,810.72-15,381.76

Finding the Fourth Proportional to 28,529.68, 42,810.72 and 15,381.76

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Solution

The fourth proportional to 28,529.68, 42,810.72 and 15,381.76 is: 23,081.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,529.68 : 42,810.72 = 15,381.76 : x
  2. Step 2: Convert to fraction form
    28,529.68/42,810.72 = 15,381.76/x
  3. Step 3: Cross multiply
    28,529.68x = 42,810.72 × 15,381.76
  4. Step 4: Simplify right side
    28,529.68x = 658,504,220.47
  5. Step 5: Solve for x
    x = 658,504,220.47/28,529.68
  6. Step 6: Final answer
    x = 23,081.37

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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.