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Finding the Fourth Proportional to 36,428, 50,271.62 and 20,513.04

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Solution

The fourth proportional to 36,428, 50,271.62 and 20,513.04 is: 28,308.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,428 : 50,271.62 = 20,513.04 : x
  2. Step 2: Convert to fraction form
    36,428/50,271.62 = 20,513.04/x
  3. Step 3: Cross multiply
    36,428x = 50,271.62 × 20,513.04
  4. Step 4: Simplify right side
    36,428x = 1,031,223,751.92
  5. Step 5: Solve for x
    x = 1,031,223,751.92/36,428
  6. Step 6: Final answer
    x = 28,308.55

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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.