Home / 21,368.41-29,480.56-13,407.73

Finding the Fourth Proportional to 21,368.41, 29,480.56 and 13,407.73

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Solution

The fourth proportional to 21,368.41, 29,480.56 and 13,407.73 is: 18,497.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.41 : 29,480.56 = 13,407.73 : x
  2. Step 2: Convert to fraction form
    21,368.41/29,480.56 = 13,407.73/x
  3. Step 3: Cross multiply
    21,368.41x = 29,480.56 × 13,407.73
  4. Step 4: Simplify right side
    21,368.41x = 395,267,388.73
  5. Step 5: Solve for x
    x = 395,267,388.73/21,368.41
  6. Step 6: Final answer
    x = 18,497.74

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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.