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Finding the Fourth Proportional to 14,687.79, 20,268.60 and 7,973.28

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Solution

The fourth proportional to 14,687.79, 20,268.60 and 7,973.28 is: 11,002.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.79 : 20,268.60 = 7,973.28 : x
  2. Step 2: Convert to fraction form
    14,687.79/20,268.60 = 7,973.28/x
  3. Step 3: Cross multiply
    14,687.79x = 20,268.60 × 7,973.28
  4. Step 4: Simplify right side
    14,687.79x = 161,607,223.01
  5. Step 5: Solve for x
    x = 161,607,223.01/14,687.79
  6. Step 6: Final answer
    x = 11,002.83

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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.