Home / 28,920.59-43,302.62-18,900.37

Finding the Fourth Proportional to 28,920.59, 43,302.62 and 18,900.37

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Solution

The fourth proportional to 28,920.59, 43,302.62 and 18,900.37 is: 28,299.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.59 : 43,302.62 = 18,900.37 : x
  2. Step 2: Convert to fraction form
    28,920.59/43,302.62 = 18,900.37/x
  3. Step 3: Cross multiply
    28,920.59x = 43,302.62 × 18,900.37
  4. Step 4: Simplify right side
    28,920.59x = 818,435,641.35
  5. Step 5: Solve for x
    x = 818,435,641.35/28,920.59
  6. Step 6: Final answer
    x = 28,299.41

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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.