Home / 20,358.36-28,094.94-11,405.79

Finding the Fourth Proportional to 20,358.36, 28,094.94 and 11,405.79

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Solution

The fourth proportional to 20,358.36, 28,094.94 and 11,405.79 is: 15,740.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.36 : 28,094.94 = 11,405.79 : x
  2. Step 2: Convert to fraction form
    20,358.36/28,094.94 = 11,405.79/x
  3. Step 3: Cross multiply
    20,358.36x = 28,094.94 × 11,405.79
  4. Step 4: Simplify right side
    20,358.36x = 320,444,985.70
  5. Step 5: Solve for x
    x = 320,444,985.70/20,358.36
  6. Step 6: Final answer
    x = 15,740.22

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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.