Home / 20,091.48-27,720.75-12,539.01

Finding the Fourth Proportional to 20,091.48, 27,720.75 and 12,539.01

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Solution

The fourth proportional to 20,091.48, 27,720.75 and 12,539.01 is: 17,300.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.48 : 27,720.75 = 12,539.01 : x
  2. Step 2: Convert to fraction form
    20,091.48/27,720.75 = 12,539.01/x
  3. Step 3: Cross multiply
    20,091.48x = 27,720.75 × 12,539.01
  4. Step 4: Simplify right side
    20,091.48x = 347,590,761.46
  5. Step 5: Solve for x
    x = 347,590,761.46/20,091.48
  6. Step 6: Final answer
    x = 17,300.41

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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.