Home / 28,664.50-39,557.37-15,918.47

Finding the Fourth Proportional to 28,664.50, 39,557.37 and 15,918.47

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Solution

The fourth proportional to 28,664.50, 39,557.37 and 15,918.47 is: 21,967.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.50 : 39,557.37 = 15,918.47 : x
  2. Step 2: Convert to fraction form
    28,664.50/39,557.37 = 15,918.47/x
  3. Step 3: Cross multiply
    28,664.50x = 39,557.37 × 15,918.47
  4. Step 4: Simplify right side
    28,664.50x = 629,692,950.84
  5. Step 5: Solve for x
    x = 629,692,950.84/28,664.50
  6. Step 6: Final answer
    x = 21,967.69

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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.