Home / 18,985.16-28,480.46-5,838.63

Finding the Fourth Proportional to 18,985.16, 28,480.46 and 5,838.63

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Solution

The fourth proportional to 18,985.16, 28,480.46 and 5,838.63 is: 8,758.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.16 : 28,480.46 = 5,838.63 : x
  2. Step 2: Convert to fraction form
    18,985.16/28,480.46 = 5,838.63/x
  3. Step 3: Cross multiply
    18,985.16x = 28,480.46 × 5,838.63
  4. Step 4: Simplify right side
    18,985.16x = 166,286,868.17
  5. Step 5: Solve for x
    x = 166,286,868.17/18,985.16
  6. Step 6: Final answer
    x = 8,758.78

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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.