Home / 28,530.78-39,368.07-15,953.10

Finding the Fourth Proportional to 28,530.78, 39,368.07 and 15,953.10

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Solution

The fourth proportional to 28,530.78, 39,368.07 and 15,953.10 is: 22,012.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.78 : 39,368.07 = 15,953.10 : x
  2. Step 2: Convert to fraction form
    28,530.78/39,368.07 = 15,953.10/x
  3. Step 3: Cross multiply
    28,530.78x = 39,368.07 × 15,953.10
  4. Step 4: Simplify right side
    28,530.78x = 628,042,757.52
  5. Step 5: Solve for x
    x = 628,042,757.52/28,530.78
  6. Step 6: Final answer
    x = 22,012.81

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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.