Home / 21,921.24-30,231.45-14,364.83

Finding the Fourth Proportional to 21,921.24, 30,231.45 and 14,364.83

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Solution

The fourth proportional to 21,921.24, 30,231.45 and 14,364.83 is: 19,810.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.24 : 30,231.45 = 14,364.83 : x
  2. Step 2: Convert to fraction form
    21,921.24/30,231.45 = 14,364.83/x
  3. Step 3: Cross multiply
    21,921.24x = 30,231.45 × 14,364.83
  4. Step 4: Simplify right side
    21,921.24x = 434,269,585.83
  5. Step 5: Solve for x
    x = 434,269,585.83/21,921.24
  6. Step 6: Final answer
    x = 19,810.45

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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.