Home / 28,412.36-39,209.10-15,836.84

Finding the Fourth Proportional to 28,412.36, 39,209.10 and 15,836.84

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Solution

The fourth proportional to 28,412.36, 39,209.10 and 15,836.84 is: 21,854.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,412.36 : 39,209.10 = 15,836.84 : x
  2. Step 2: Convert to fraction form
    28,412.36/39,209.10 = 15,836.84/x
  3. Step 3: Cross multiply
    28,412.36x = 39,209.10 × 15,836.84
  4. Step 4: Simplify right side
    28,412.36x = 620,948,243.24
  5. Step 5: Solve for x
    x = 620,948,243.24/28,412.36
  6. Step 6: Final answer
    x = 21,854.86

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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.