Home / 20,316.36-28,028.70-12,759.48

Finding the Fourth Proportional to 20,316.36, 28,028.70 and 12,759.48

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Solution

The fourth proportional to 20,316.36, 28,028.70 and 12,759.48 is: 17,603.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.36 : 28,028.70 = 12,759.48 : x
  2. Step 2: Convert to fraction form
    20,316.36/28,028.70 = 12,759.48/x
  3. Step 3: Cross multiply
    20,316.36x = 28,028.70 × 12,759.48
  4. Step 4: Simplify right side
    20,316.36x = 357,631,637.08
  5. Step 5: Solve for x
    x = 357,631,637.08/20,316.36
  6. Step 6: Final answer
    x = 17,603.14

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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.