Home / 21,210.36-29,270.54-11,650.48

Finding the Fourth Proportional to 21,210.36, 29,270.54 and 11,650.48

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Solution

The fourth proportional to 21,210.36, 29,270.54 and 11,650.48 is: 16,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.36 : 29,270.54 = 11,650.48 : x
  2. Step 2: Convert to fraction form
    21,210.36/29,270.54 = 11,650.48/x
  3. Step 3: Cross multiply
    21,210.36x = 29,270.54 × 11,650.48
  4. Step 4: Simplify right side
    21,210.36x = 341,015,796.81
  5. Step 5: Solve for x
    x = 341,015,796.81/21,210.36
  6. Step 6: Final answer
    x = 16,077.79

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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.