Home / 20,295.19-28,007.68-11,343.28

Finding the Fourth Proportional to 20,295.19, 28,007.68 and 11,343.28

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Solution

The fourth proportional to 20,295.19, 28,007.68 and 11,343.28 is: 15,653.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.19 : 28,007.68 = 11,343.28 : x
  2. Step 2: Convert to fraction form
    20,295.19/28,007.68 = 11,343.28/x
  3. Step 3: Cross multiply
    20,295.19x = 28,007.68 × 11,343.28
  4. Step 4: Simplify right side
    20,295.19x = 317,698,816.35
  5. Step 5: Solve for x
    x = 317,698,816.35/20,295.19
  6. Step 6: Final answer
    x = 15,653.90

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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.