Home / 28,886.48-39,868.68-18,268.88

Finding the Fourth Proportional to 28,886.48, 39,868.68 and 18,268.88

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Solution

The fourth proportional to 28,886.48, 39,868.68 and 18,268.88 is: 25,214.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886.48 : 39,868.68 = 18,268.88 : x
  2. Step 2: Convert to fraction form
    28,886.48/39,868.68 = 18,268.88/x
  3. Step 3: Cross multiply
    28,886.48x = 39,868.68 × 18,268.88
  4. Step 4: Simplify right side
    28,886.48x = 728,356,130.68
  5. Step 5: Solve for x
    x = 728,356,130.68/28,886.48
  6. Step 6: Final answer
    x = 25,214.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.