Home / 28,784.72-39,722.80-16,209.48

Finding the Fourth Proportional to 28,784.72, 39,722.80 and 16,209.48

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Solution

The fourth proportional to 28,784.72, 39,722.80 and 16,209.48 is: 22,369.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,784.72 : 39,722.80 = 16,209.48 : x
  2. Step 2: Convert to fraction form
    28,784.72/39,722.80 = 16,209.48/x
  3. Step 3: Cross multiply
    28,784.72x = 39,722.80 × 16,209.48
  4. Step 4: Simplify right side
    28,784.72x = 643,885,932.14
  5. Step 5: Solve for x
    x = 643,885,932.14/28,784.72
  6. Step 6: Final answer
    x = 22,369.02

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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.