Home / 21,447.81-29,611.80-17,478.42

Finding the Fourth Proportional to 21,447.81, 29,611.80 and 17,478.42

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Solution

The fourth proportional to 21,447.81, 29,611.80 and 17,478.42 is: 24,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447.81 : 29,611.80 = 17,478.42 : x
  2. Step 2: Convert to fraction form
    21,447.81/29,611.80 = 17,478.42/x
  3. Step 3: Cross multiply
    21,447.81x = 29,611.80 × 17,478.42
  4. Step 4: Simplify right side
    21,447.81x = 517,567,477.36
  5. Step 5: Solve for x
    x = 517,567,477.36/21,447.81
  6. Step 6: Final answer
    x = 24,131.48

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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.