Home / 28,208.56-42,271.26-15,711.38

Finding the Fourth Proportional to 28,208.56, 42,271.26 and 15,711.38

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Solution

The fourth proportional to 28,208.56, 42,271.26 and 15,711.38 is: 23,543.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.56 : 42,271.26 = 15,711.38 : x
  2. Step 2: Convert to fraction form
    28,208.56/42,271.26 = 15,711.38/x
  3. Step 3: Cross multiply
    28,208.56x = 42,271.26 × 15,711.38
  4. Step 4: Simplify right side
    28,208.56x = 664,139,828.94
  5. Step 5: Solve for x
    x = 664,139,828.94/28,208.56
  6. Step 6: Final answer
    x = 23,543.91

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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.