Home / 18,710.20-28,065.06-5,383.52

Finding the Fourth Proportional to 18,710.20, 28,065.06 and 5,383.52

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Solution

The fourth proportional to 18,710.20, 28,065.06 and 5,383.52 is: 8,075.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.20 : 28,065.06 = 5,383.52 : x
  2. Step 2: Convert to fraction form
    18,710.20/28,065.06 = 5,383.52/x
  3. Step 3: Cross multiply
    18,710.20x = 28,065.06 × 5,383.52
  4. Step 4: Simplify right side
    18,710.20x = 151,088,811.81
  5. Step 5: Solve for x
    x = 151,088,811.81/18,710.20
  6. Step 6: Final answer
    x = 8,075.21

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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.