Home / 18,845.47-28,268.48-8,985.79

Finding the Fourth Proportional to 18,845.47, 28,268.48 and 8,985.79

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Solution

The fourth proportional to 18,845.47, 28,268.48 and 8,985.79 is: 13,478.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,845.47 : 28,268.48 = 8,985.79 : x
  2. Step 2: Convert to fraction form
    18,845.47/28,268.48 = 8,985.79/x
  3. Step 3: Cross multiply
    18,845.47x = 28,268.48 × 8,985.79
  4. Step 4: Simplify right side
    18,845.47x = 254,014,624.90
  5. Step 5: Solve for x
    x = 254,014,624.90/18,845.47
  6. Step 6: Final answer
    x = 13,478.82

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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.