Home / 20,478.36-28,260.24-11,526

Finding the Fourth Proportional to 20,478.36, 28,260.24 and 11,526

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Solution

The fourth proportional to 20,478.36, 28,260.24 and 11,526 is: 15,905.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478.36 : 28,260.24 = 11,526 : x
  2. Step 2: Convert to fraction form
    20,478.36/28,260.24 = 11,526/x
  3. Step 3: Cross multiply
    20,478.36x = 28,260.24 × 11,526
  4. Step 4: Simplify right side
    20,478.36x = 325,727,526.24
  5. Step 5: Solve for x
    x = 325,727,526.24/20,478.36
  6. Step 6: Final answer
    x = 15,905.94

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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.