Home / 18,429.84-25,433.64-11,360.88

Finding the Fourth Proportional to 18,429.84, 25,433.64 and 11,360.88

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Solution

The fourth proportional to 18,429.84, 25,433.64 and 11,360.88 is: 15,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.84 : 25,433.64 = 11,360.88 : x
  2. Step 2: Convert to fraction form
    18,429.84/25,433.64 = 11,360.88/x
  3. Step 3: Cross multiply
    18,429.84x = 25,433.64 × 11,360.88
  4. Step 4: Simplify right side
    18,429.84x = 288,948,532.00
  5. Step 5: Solve for x
    x = 288,948,532.00/18,429.84
  6. Step 6: Final answer
    x = 15,678.30

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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.