Home / 28,619.52-39,493.58-15,871.71

Finding the Fourth Proportional to 28,619.52, 39,493.58 and 15,871.71

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Solution

The fourth proportional to 28,619.52, 39,493.58 and 15,871.71 is: 21,902.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,619.52 : 39,493.58 = 15,871.71 : x
  2. Step 2: Convert to fraction form
    28,619.52/39,493.58 = 15,871.71/x
  3. Step 3: Cross multiply
    28,619.52x = 39,493.58 × 15,871.71
  4. Step 4: Simplify right side
    28,619.52x = 626,830,569.26
  5. Step 5: Solve for x
    x = 626,830,569.26/28,619.52
  6. Step 6: Final answer
    x = 21,902.20

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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.