Home / 18,816.80-25,968.72-10,436

Finding the Fourth Proportional to 18,816.80, 25,968.72 and 10,436

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Solution

The fourth proportional to 18,816.80, 25,968.72 and 10,436 is: 14,402.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.80 : 25,968.72 = 10,436 : x
  2. Step 2: Convert to fraction form
    18,816.80/25,968.72 = 10,436/x
  3. Step 3: Cross multiply
    18,816.80x = 25,968.72 × 10,436
  4. Step 4: Simplify right side
    18,816.80x = 271,009,561.92
  5. Step 5: Solve for x
    x = 271,009,561.92/18,816.80
  6. Step 6: Final answer
    x = 14,402.53

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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.