Home / 21,843.96-30,128.60-14,275.84

Finding the Fourth Proportional to 21,843.96, 30,128.60 and 14,275.84

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Solution

The fourth proportional to 21,843.96, 30,128.60 and 14,275.84 is: 19,690.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,843.96 : 30,128.60 = 14,275.84 : x
  2. Step 2: Convert to fraction form
    21,843.96/30,128.60 = 14,275.84/x
  3. Step 3: Cross multiply
    21,843.96x = 30,128.60 × 14,275.84
  4. Step 4: Simplify right side
    21,843.96x = 430,111,073.02
  5. Step 5: Solve for x
    x = 430,111,073.02/21,843.96
  6. Step 6: Final answer
    x = 19,690.16

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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.