Home / 18,905.07-28,361.90-5,758.46

Finding the Fourth Proportional to 18,905.07, 28,361.90 and 5,758.46

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Solution

The fourth proportional to 18,905.07, 28,361.90 and 5,758.46 is: 8,639.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.07 : 28,361.90 = 5,758.46 : x
  2. Step 2: Convert to fraction form
    18,905.07/28,361.90 = 5,758.46/x
  3. Step 3: Cross multiply
    18,905.07x = 28,361.90 × 5,758.46
  4. Step 4: Simplify right side
    18,905.07x = 163,320,951.97
  5. Step 5: Solve for x
    x = 163,320,951.97/18,905.07
  6. Step 6: Final answer
    x = 8,639.00

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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.