Home / 20,332.85-28,055.64-11,717.69

Finding the Fourth Proportional to 20,332.85, 28,055.64 and 11,717.69

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Solution

The fourth proportional to 20,332.85, 28,055.64 and 11,717.69 is: 16,168.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.85 : 28,055.64 = 11,717.69 : x
  2. Step 2: Convert to fraction form
    20,332.85/28,055.64 = 11,717.69/x
  3. Step 3: Cross multiply
    20,332.85x = 28,055.64 × 11,717.69
  4. Step 4: Simplify right side
    20,332.85x = 328,747,292.27
  5. Step 5: Solve for x
    x = 328,747,292.27/20,332.85
  6. Step 6: Final answer
    x = 16,168.28

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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.