Home / 20,658.08-28,512.66-13,585.16

Finding the Fourth Proportional to 20,658.08, 28,512.66 and 13,585.16

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Solution

The fourth proportional to 20,658.08, 28,512.66 and 13,585.16 is: 18,750.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.08 : 28,512.66 = 13,585.16 : x
  2. Step 2: Convert to fraction form
    20,658.08/28,512.66 = 13,585.16/x
  3. Step 3: Cross multiply
    20,658.08x = 28,512.66 × 13,585.16
  4. Step 4: Simplify right side
    20,658.08x = 387,349,048.13
  5. Step 5: Solve for x
    x = 387,349,048.13/20,658.08
  6. Step 6: Final answer
    x = 18,750.49

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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.