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Finding the Fourth Proportional to 14,735.71, 20,334.77 and 8,021.21

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Solution

The fourth proportional to 14,735.71, 20,334.77 and 8,021.21 is: 11,068.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,735.71 : 20,334.77 = 8,021.21 : x
  2. Step 2: Convert to fraction form
    14,735.71/20,334.77 = 8,021.21/x
  3. Step 3: Cross multiply
    14,735.71x = 20,334.77 × 8,021.21
  4. Step 4: Simplify right side
    14,735.71x = 163,109,420.37
  5. Step 5: Solve for x
    x = 163,109,420.37/14,735.71
  6. Step 6: Final answer
    x = 11,068.99

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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.