Home / 21,450.56-29,603.41-13,499.60

Finding the Fourth Proportional to 21,450.56, 29,603.41 and 13,499.60

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Solution

The fourth proportional to 21,450.56, 29,603.41 and 13,499.60 is: 18,630.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.56 : 29,603.41 = 13,499.60 : x
  2. Step 2: Convert to fraction form
    21,450.56/29,603.41 = 13,499.60/x
  3. Step 3: Cross multiply
    21,450.56x = 29,603.41 × 13,499.60
  4. Step 4: Simplify right side
    21,450.56x = 399,634,011.87
  5. Step 5: Solve for x
    x = 399,634,011.87/21,450.56
  6. Step 6: Final answer
    x = 18,630.47

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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.