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Finding the Fourth Proportional to 28,148, 42,194.04 and 15,673.72

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Solution

The fourth proportional to 28,148, 42,194.04 and 15,673.72 is: 23,495.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148 : 42,194.04 = 15,673.72 : x
  2. Step 2: Convert to fraction form
    28,148/42,194.04 = 15,673.72/x
  3. Step 3: Cross multiply
    28,148x = 42,194.04 × 15,673.72
  4. Step 4: Simplify right side
    28,148x = 661,337,568.63
  5. Step 5: Solve for x
    x = 661,337,568.63/28,148
  6. Step 6: Final answer
    x = 23,495.01

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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.