Home / 28,628.49-39,505.92-15,882.18

Finding the Fourth Proportional to 28,628.49, 39,505.92 and 15,882.18

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Solution

The fourth proportional to 28,628.49, 39,505.92 and 15,882.18 is: 21,916.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,628.49 : 39,505.92 = 15,882.18 : x
  2. Step 2: Convert to fraction form
    28,628.49/39,505.92 = 15,882.18/x
  3. Step 3: Cross multiply
    28,628.49x = 39,505.92 × 15,882.18
  4. Step 4: Simplify right side
    28,628.49x = 627,440,132.51
  5. Step 5: Solve for x
    x = 627,440,132.51/28,628.49
  6. Step 6: Final answer
    x = 21,916.63

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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.