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Finding the Fourth Proportional to 10,383.84, 14,309.10 and 7,394.40

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Solution

The fourth proportional to 10,383.84, 14,309.10 and 7,394.40 is: 10,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,383.84 : 14,309.10 = 7,394.40 : x
  2. Step 2: Convert to fraction form
    10,383.84/14,309.10 = 7,394.40/x
  3. Step 3: Cross multiply
    10,383.84x = 14,309.10 × 7,394.40
  4. Step 4: Simplify right side
    10,383.84x = 105,807,209.04
  5. Step 5: Solve for x
    x = 105,807,209.04/10,383.84
  6. Step 6: Final answer
    x = 10,189.60

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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.