Home / 28,516.79-39,353.15-17,186.45

Finding the Fourth Proportional to 28,516.79, 39,353.15 and 17,186.45

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Solution

The fourth proportional to 28,516.79, 39,353.15 and 17,186.45 is: 23,717.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.79 : 39,353.15 = 17,186.45 : x
  2. Step 2: Convert to fraction form
    28,516.79/39,353.15 = 17,186.45/x
  3. Step 3: Cross multiply
    28,516.79x = 39,353.15 × 17,186.45
  4. Step 4: Simplify right side
    28,516.79x = 676,340,791.02
  5. Step 5: Solve for x
    x = 676,340,791.02/28,516.79
  6. Step 6: Final answer
    x = 23,717.28

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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.