Home / 28,410.40-39,206.61-15,664.04

Finding the Fourth Proportional to 28,410.40, 39,206.61 and 15,664.04

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Solution

The fourth proportional to 28,410.40, 39,206.61 and 15,664.04 is: 21,616.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,410.40 : 39,206.61 = 15,664.04 : x
  2. Step 2: Convert to fraction form
    28,410.40/39,206.61 = 15,664.04/x
  3. Step 3: Cross multiply
    28,410.40x = 39,206.61 × 15,664.04
  4. Step 4: Simplify right side
    28,410.40x = 614,133,632.95
  5. Step 5: Solve for x
    x = 614,133,632.95/28,410.40
  6. Step 6: Final answer
    x = 21,616.51

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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.