Home / 18,678.02-28,016.24-7,581.68

Finding the Fourth Proportional to 18,678.02, 28,016.24 and 7,581.68

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Solution

The fourth proportional to 18,678.02, 28,016.24 and 7,581.68 is: 11,372.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.02 : 28,016.24 = 7,581.68 : x
  2. Step 2: Convert to fraction form
    18,678.02/28,016.24 = 7,581.68/x
  3. Step 3: Cross multiply
    18,678.02x = 28,016.24 × 7,581.68
  4. Step 4: Simplify right side
    18,678.02x = 212,410,166.48
  5. Step 5: Solve for x
    x = 212,410,166.48/18,678.02
  6. Step 6: Final answer
    x = 11,372.20

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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.