Home / 28,268.69-42,403.05-12,470.37

Finding the Fourth Proportional to 28,268.69, 42,403.05 and 12,470.37

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Solution

The fourth proportional to 28,268.69, 42,403.05 and 12,470.37 is: 18,705.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.69 : 42,403.05 = 12,470.37 : x
  2. Step 2: Convert to fraction form
    28,268.69/42,403.05 = 12,470.37/x
  3. Step 3: Cross multiply
    28,268.69x = 42,403.05 × 12,470.37
  4. Step 4: Simplify right side
    28,268.69x = 528,781,722.63
  5. Step 5: Solve for x
    x = 528,781,722.63/28,268.69
  6. Step 6: Final answer
    x = 18,705.56

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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.