Home / 28,799.32-39,758.47-20,211.92

Finding the Fourth Proportional to 28,799.32, 39,758.47 and 20,211.92

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Solution

The fourth proportional to 28,799.32, 39,758.47 and 20,211.92 is: 27,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,799.32 : 39,758.47 = 20,211.92 : x
  2. Step 2: Convert to fraction form
    28,799.32/39,758.47 = 20,211.92/x
  3. Step 3: Cross multiply
    28,799.32x = 39,758.47 × 20,211.92
  4. Step 4: Simplify right side
    28,799.32x = 803,595,164.89
  5. Step 5: Solve for x
    x = 803,595,164.89/28,799.32
  6. Step 6: Final answer
    x = 27,903.27

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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.