Home / 21,327.06-29,430.54-11,895.42

Finding the Fourth Proportional to 21,327.06, 29,430.54 and 11,895.42

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Solution

The fourth proportional to 21,327.06, 29,430.54 and 11,895.42 is: 16,415.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.06 : 29,430.54 = 11,895.42 : x
  2. Step 2: Convert to fraction form
    21,327.06/29,430.54 = 11,895.42/x
  3. Step 3: Cross multiply
    21,327.06x = 29,430.54 × 11,895.42
  4. Step 4: Simplify right side
    21,327.06x = 350,088,634.13
  5. Step 5: Solve for x
    x = 350,088,634.13/21,327.06
  6. Step 6: Final answer
    x = 16,415.23

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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.