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Finding the Fourth Proportional to 18,253, 25,189.16 and 9,869.50

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Solution

The fourth proportional to 18,253, 25,189.16 and 9,869.50 is: 13,619.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,253 : 25,189.16 = 9,869.50 : x
  2. Step 2: Convert to fraction form
    18,253/25,189.16 = 9,869.50/x
  3. Step 3: Cross multiply
    18,253x = 25,189.16 × 9,869.50
  4. Step 4: Simplify right side
    18,253x = 248,604,414.62
  5. Step 5: Solve for x
    x = 248,604,414.62/18,253
  6. Step 6: Final answer
    x = 13,619.92

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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.