Home / 28,878.64-39,858.84-18,282.40

Finding the Fourth Proportional to 28,878.64, 39,858.84 and 18,282.40

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Solution

The fourth proportional to 28,878.64, 39,858.84 and 18,282.40 is: 25,233.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.64 : 39,858.84 = 18,282.40 : x
  2. Step 2: Convert to fraction form
    28,878.64/39,858.84 = 18,282.40/x
  3. Step 3: Cross multiply
    28,878.64x = 39,858.84 × 18,282.40
  4. Step 4: Simplify right side
    28,878.64x = 728,715,256.42
  5. Step 5: Solve for x
    x = 728,715,256.42/28,878.64
  6. Step 6: Final answer
    x = 25,233.71

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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.