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Finding the Fourth Proportional to 14,844.63, 20,485.61 and 8,130.68

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Solution

The fourth proportional to 14,844.63, 20,485.61 and 8,130.68 is: 11,220.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,844.63 : 20,485.61 = 8,130.68 : x
  2. Step 2: Convert to fraction form
    14,844.63/20,485.61 = 8,130.68/x
  3. Step 3: Cross multiply
    14,844.63x = 20,485.61 × 8,130.68
  4. Step 4: Simplify right side
    14,844.63x = 166,561,903.74
  5. Step 5: Solve for x
    x = 166,561,903.74/14,844.63
  6. Step 6: Final answer
    x = 11,220.34

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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.