Home / 28,412.57-39,209.87-15,835.97

Finding the Fourth Proportional to 28,412.57, 39,209.87 and 15,835.97

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Solution

The fourth proportional to 28,412.57, 39,209.87 and 15,835.97 is: 21,853.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,412.57 : 39,209.87 = 15,835.97 : x
  2. Step 2: Convert to fraction form
    28,412.57/39,209.87 = 15,835.97/x
  3. Step 3: Cross multiply
    28,412.57x = 39,209.87 × 15,835.97
  4. Step 4: Simplify right side
    28,412.57x = 620,926,325.02
  5. Step 5: Solve for x
    x = 620,926,325.02/28,412.57
  6. Step 6: Final answer
    x = 21,853.93

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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.