Home / 28,585.13-39,447.39-15,838.34

Finding the Fourth Proportional to 28,585.13, 39,447.39 and 15,838.34

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Solution

The fourth proportional to 28,585.13, 39,447.39 and 15,838.34 is: 21,856.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,585.13 : 39,447.39 = 15,838.34 : x
  2. Step 2: Convert to fraction form
    28,585.13/39,447.39 = 15,838.34/x
  3. Step 3: Cross multiply
    28,585.13x = 39,447.39 × 15,838.34
  4. Step 4: Simplify right side
    28,585.13x = 624,780,977.70
  5. Step 5: Solve for x
    x = 624,780,977.70/28,585.13
  6. Step 6: Final answer
    x = 21,856.86

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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.