Home / 28,395.52-39,184.32-15,819.04

Finding the Fourth Proportional to 28,395.52, 39,184.32 and 15,819.04

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Solution

The fourth proportional to 28,395.52, 39,184.32 and 15,819.04 is: 21,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,395.52 : 39,184.32 = 15,819.04 : x
  2. Step 2: Convert to fraction form
    28,395.52/39,184.32 = 15,819.04/x
  3. Step 3: Cross multiply
    28,395.52x = 39,184.32 × 15,819.04
  4. Step 4: Simplify right side
    28,395.52x = 619,858,325.45
  5. Step 5: Solve for x
    x = 619,858,325.45/28,395.52
  6. Step 6: Final answer
    x = 21,829.44

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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.