Home / 18,428.80-27,647.70-5,281.24

Finding the Fourth Proportional to 18,428.80, 27,647.70 and 5,281.24

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Solution

The fourth proportional to 18,428.80, 27,647.70 and 5,281.24 is: 7,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.80 : 27,647.70 = 5,281.24 : x
  2. Step 2: Convert to fraction form
    18,428.80/27,647.70 = 5,281.24/x
  3. Step 3: Cross multiply
    18,428.80x = 27,647.70 × 5,281.24
  4. Step 4: Simplify right side
    18,428.80x = 146,014,139.15
  5. Step 5: Solve for x
    x = 146,014,139.15/18,428.80
  6. Step 6: Final answer
    x = 7,923.15

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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.