Home / 21,864.06-30,173.22-13,365.18

Finding the Fourth Proportional to 21,864.06, 30,173.22 and 13,365.18

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Solution

The fourth proportional to 21,864.06, 30,173.22 and 13,365.18 is: 18,444.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.06 : 30,173.22 = 13,365.18 : x
  2. Step 2: Convert to fraction form
    21,864.06/30,173.22 = 13,365.18/x
  3. Step 3: Cross multiply
    21,864.06x = 30,173.22 × 13,365.18
  4. Step 4: Simplify right side
    21,864.06x = 403,270,516.48
  5. Step 5: Solve for x
    x = 403,270,516.48/21,864.06
  6. Step 6: Final answer
    x = 18,444.45

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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.