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Finding the Fourth Proportional to 14,645.21, 21,912.93 and 8,700.41

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Solution

The fourth proportional to 14,645.21, 21,912.93 and 8,700.41 is: 13,018.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,645.21 : 21,912.93 = 8,700.41 : x
  2. Step 2: Convert to fraction form
    14,645.21/21,912.93 = 8,700.41/x
  3. Step 3: Cross multiply
    14,645.21x = 21,912.93 × 8,700.41
  4. Step 4: Simplify right side
    14,645.21x = 190,651,530.08
  5. Step 5: Solve for x
    x = 190,651,530.08/14,645.21
  6. Step 6: Final answer
    x = 13,018.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.