Home / 20,359.62-28,094.36-13,991.81

Finding the Fourth Proportional to 20,359.62, 28,094.36 and 13,991.81

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Solution

The fourth proportional to 20,359.62, 28,094.36 and 13,991.81 is: 19,307.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.62 : 28,094.36 = 13,991.81 : x
  2. Step 2: Convert to fraction form
    20,359.62/28,094.36 = 13,991.81/x
  3. Step 3: Cross multiply
    20,359.62x = 28,094.36 × 13,991.81
  4. Step 4: Simplify right side
    20,359.62x = 393,090,736.76
  5. Step 5: Solve for x
    x = 393,090,736.76/20,359.62
  6. Step 6: Final answer
    x = 19,307.37

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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.