Home / 20,280.87-30,386.43-18,226.53

Finding the Fourth Proportional to 20,280.87, 30,386.43 and 18,226.53

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Solution

The fourth proportional to 20,280.87, 30,386.43 and 18,226.53 is: 27,308.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.87 : 30,386.43 = 18,226.53 : x
  2. Step 2: Convert to fraction form
    20,280.87/30,386.43 = 18,226.53/x
  3. Step 3: Cross multiply
    20,280.87x = 30,386.43 × 18,226.53
  4. Step 4: Simplify right side
    20,280.87x = 553,839,177.99
  5. Step 5: Solve for x
    x = 553,839,177.99/20,280.87
  6. Step 6: Final answer
    x = 27,308.45

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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.