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Finding the Fourth Proportional to 18,503.79, 25,534.71 and 10,119.75

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Solution

The fourth proportional to 18,503.79, 25,534.71 and 10,119.75 is: 13,964.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.79 : 25,534.71 = 10,119.75 : x
  2. Step 2: Convert to fraction form
    18,503.79/25,534.71 = 10,119.75/x
  3. Step 3: Cross multiply
    18,503.79x = 25,534.71 × 10,119.75
  4. Step 4: Simplify right side
    18,503.79x = 258,404,881.52
  5. Step 5: Solve for x
    x = 258,404,881.52/18,503.79
  6. Step 6: Final answer
    x = 13,964.97

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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.