Home / 28,511.33-39,342.21-15,762.77

Finding the Fourth Proportional to 28,511.33, 39,342.21 and 15,762.77

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Solution

The fourth proportional to 28,511.33, 39,342.21 and 15,762.77 is: 21,750.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.33 : 39,342.21 = 15,762.77 : x
  2. Step 2: Convert to fraction form
    28,511.33/39,342.21 = 15,762.77/x
  3. Step 3: Cross multiply
    28,511.33x = 39,342.21 × 15,762.77
  4. Step 4: Simplify right side
    28,511.33x = 620,142,099.23
  5. Step 5: Solve for x
    x = 620,142,099.23/28,511.33
  6. Step 6: Final answer
    x = 21,750.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.