Home / 20,952.47-28,911.23-11,877.33

Finding the Fourth Proportional to 20,952.47, 28,911.23 and 11,877.33

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Solution

The fourth proportional to 20,952.47, 28,911.23 and 11,877.33 is: 16,388.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.47 : 28,911.23 = 11,877.33 : x
  2. Step 2: Convert to fraction form
    20,952.47/28,911.23 = 11,877.33/x
  3. Step 3: Cross multiply
    20,952.47x = 28,911.23 × 11,877.33
  4. Step 4: Simplify right side
    20,952.47x = 343,388,312.99
  5. Step 5: Solve for x
    x = 343,388,312.99/20,952.47
  6. Step 6: Final answer
    x = 16,388.92

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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.