Home / 28,471.64-39,291.26-15,725.70

Finding the Fourth Proportional to 28,471.64, 39,291.26 and 15,725.70

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Solution

The fourth proportional to 28,471.64, 39,291.26 and 15,725.70 is: 21,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471.64 : 39,291.26 = 15,725.70 : x
  2. Step 2: Convert to fraction form
    28,471.64/39,291.26 = 15,725.70/x
  3. Step 3: Cross multiply
    28,471.64x = 39,291.26 × 15,725.70
  4. Step 4: Simplify right side
    28,471.64x = 617,882,488.75
  5. Step 5: Solve for x
    x = 617,882,488.75/28,471.64
  6. Step 6: Final answer
    x = 21,701.69

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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.