Home / 54,365.55-81,528.76-18,817.21

Finding the Fourth Proportional to 54,365.55, 81,528.76 and 18,817.21

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Solution

The fourth proportional to 54,365.55, 81,528.76 and 18,817.21 is: 28,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,365.55 : 81,528.76 = 18,817.21 : x
  2. Step 2: Convert to fraction form
    54,365.55/81,528.76 = 18,817.21/x
  3. Step 3: Cross multiply
    54,365.55x = 81,528.76 × 18,817.21
  4. Step 4: Simplify right side
    54,365.55x = 1,534,143,923.39
  5. Step 5: Solve for x
    x = 1,534,143,923.39/54,365.55
  6. Step 6: Final answer
    x = 28,219.05

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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.