Home / 18,675.21-28,018.69-5,527.70

Finding the Fourth Proportional to 18,675.21, 28,018.69 and 5,527.70

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Solution

The fourth proportional to 18,675.21, 28,018.69 and 5,527.70 is: 8,293.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.21 : 28,018.69 = 5,527.70 : x
  2. Step 2: Convert to fraction form
    18,675.21/28,018.69 = 5,527.70/x
  3. Step 3: Cross multiply
    18,675.21x = 28,018.69 × 5,527.70
  4. Step 4: Simplify right side
    18,675.21x = 154,878,758.80
  5. Step 5: Solve for x
    x = 154,878,758.80/18,675.21
  6. Step 6: Final answer
    x = 8,293.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.