Home / 18,686.50-25,787.64-10,303

Finding the Fourth Proportional to 18,686.50, 25,787.64 and 10,303

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Solution

The fourth proportional to 18,686.50, 25,787.64 and 10,303 is: 14,218.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.50 : 25,787.64 = 10,303 : x
  2. Step 2: Convert to fraction form
    18,686.50/25,787.64 = 10,303/x
  3. Step 3: Cross multiply
    18,686.50x = 25,787.64 × 10,303
  4. Step 4: Simplify right side
    18,686.50x = 265,690,054.92
  5. Step 5: Solve for x
    x = 265,690,054.92/18,686.50
  6. Step 6: Final answer
    x = 14,218.29

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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.