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Finding the Fourth Proportional to 13,735.96, 18,955.65 and 7,448.29

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Solution

The fourth proportional to 13,735.96, 18,955.65 and 7,448.29 is: 10,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,735.96 : 18,955.65 = 7,448.29 : x
  2. Step 2: Convert to fraction form
    13,735.96/18,955.65 = 7,448.29/x
  3. Step 3: Cross multiply
    13,735.96x = 18,955.65 × 7,448.29
  4. Step 4: Simplify right side
    13,735.96x = 141,187,178.34
  5. Step 5: Solve for x
    x = 141,187,178.34/13,735.96
  6. Step 6: Final answer
    x = 10,278.65

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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.