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Finding the Fourth Proportional to 14,771.93, 20,387.22 and 9,394.88

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Solution

The fourth proportional to 14,771.93, 20,387.22 and 9,394.88 is: 12,966.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,771.93 : 20,387.22 = 9,394.88 : x
  2. Step 2: Convert to fraction form
    14,771.93/20,387.22 = 9,394.88/x
  3. Step 3: Cross multiply
    14,771.93x = 20,387.22 × 9,394.88
  4. Step 4: Simplify right side
    14,771.93x = 191,535,383.50
  5. Step 5: Solve for x
    x = 191,535,383.50/14,771.93
  6. Step 6: Final answer
    x = 12,966.17

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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.