Home / 20,030.58-30,045.94-18,812.68

Finding the Fourth Proportional to 20,030.58, 30,045.94 and 18,812.68

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Solution

The fourth proportional to 20,030.58, 30,045.94 and 18,812.68 is: 28,219.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.58 : 30,045.94 = 18,812.68 : x
  2. Step 2: Convert to fraction form
    20,030.58/30,045.94 = 18,812.68/x
  3. Step 3: Cross multiply
    20,030.58x = 30,045.94 × 18,812.68
  4. Step 4: Simplify right side
    20,030.58x = 565,244,654.52
  5. Step 5: Solve for x
    x = 565,244,654.52/20,030.58
  6. Step 6: Final answer
    x = 28,219.09

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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.