Home / 21,327.09-29,443.41-14,790.39

Finding the Fourth Proportional to 21,327.09, 29,443.41 and 14,790.39

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Solution

The fourth proportional to 21,327.09, 29,443.41 and 14,790.39 is: 20,419.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.09 : 29,443.41 = 14,790.39 : x
  2. Step 2: Convert to fraction form
    21,327.09/29,443.41 = 14,790.39/x
  3. Step 3: Cross multiply
    21,327.09x = 29,443.41 × 14,790.39
  4. Step 4: Simplify right side
    21,327.09x = 435,479,516.83
  5. Step 5: Solve for x
    x = 435,479,516.83/21,327.09
  6. Step 6: Final answer
    x = 20,419.08

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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.