Home / 21,436.68-29,575.22-13,479.51

Finding the Fourth Proportional to 21,436.68, 29,575.22 and 13,479.51

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Solution

The fourth proportional to 21,436.68, 29,575.22 and 13,479.51 is: 18,597.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,436.68 : 29,575.22 = 13,479.51 : x
  2. Step 2: Convert to fraction form
    21,436.68/29,575.22 = 13,479.51/x
  3. Step 3: Cross multiply
    21,436.68x = 29,575.22 × 13,479.51
  4. Step 4: Simplify right side
    21,436.68x = 398,659,406.34
  5. Step 5: Solve for x
    x = 398,659,406.34/21,436.68
  6. Step 6: Final answer
    x = 18,597.07

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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.