Home / 28,651.05-39,538.29-15,904.38

Finding the Fourth Proportional to 28,651.05, 39,538.29 and 15,904.38

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Solution

The fourth proportional to 28,651.05, 39,538.29 and 15,904.38 is: 21,947.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,651.05 : 39,538.29 = 15,904.38 : x
  2. Step 2: Convert to fraction form
    28,651.05/39,538.29 = 15,904.38/x
  3. Step 3: Cross multiply
    28,651.05x = 39,538.29 × 15,904.38
  4. Step 4: Simplify right side
    28,651.05x = 628,831,988.71
  5. Step 5: Solve for x
    x = 628,831,988.71/28,651.05
  6. Step 6: Final answer
    x = 21,947.96

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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.