Home / 28,745.47-39,666.40-15,997.69

Finding the Fourth Proportional to 28,745.47, 39,666.40 and 15,997.69

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Solution

The fourth proportional to 28,745.47, 39,666.40 and 15,997.69 is: 22,075.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.47 : 39,666.40 = 15,997.69 : x
  2. Step 2: Convert to fraction form
    28,745.47/39,666.40 = 15,997.69/x
  3. Step 3: Cross multiply
    28,745.47x = 39,666.40 × 15,997.69
  4. Step 4: Simplify right side
    28,745.47x = 634,570,770.62
  5. Step 5: Solve for x
    x = 634,570,770.62/28,745.47
  6. Step 6: Final answer
    x = 22,075.51

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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.