Home / 28,926.95-39,912.75-18,310.43

Finding the Fourth Proportional to 28,926.95, 39,912.75 and 18,310.43

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Solution

The fourth proportional to 28,926.95, 39,912.75 and 18,310.43 is: 25,264.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,926.95 : 39,912.75 = 18,310.43 : x
  2. Step 2: Convert to fraction form
    28,926.95/39,912.75 = 18,310.43/x
  3. Step 3: Cross multiply
    28,926.95x = 39,912.75 × 18,310.43
  4. Step 4: Simplify right side
    28,926.95x = 730,819,602.51
  5. Step 5: Solve for x
    x = 730,819,602.51/28,926.95
  6. Step 6: Final answer
    x = 25,264.32

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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.