Home / 19,152.78-28,715.31-12,897.27

Finding the Fourth Proportional to 19,152.78, 28,715.31 and 12,897.27

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Solution

The fourth proportional to 19,152.78, 28,715.31 and 12,897.27 is: 19,336.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152.78 : 28,715.31 = 12,897.27 : x
  2. Step 2: Convert to fraction form
    19,152.78/28,715.31 = 12,897.27/x
  3. Step 3: Cross multiply
    19,152.78x = 28,715.31 × 12,897.27
  4. Step 4: Simplify right side
    19,152.78x = 370,349,106.20
  5. Step 5: Solve for x
    x = 370,349,106.20/19,152.78
  6. Step 6: Final answer
    x = 19,336.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.