Home / 20,548.40-28,356.80-11,597.80

Finding the Fourth Proportional to 20,548.40, 28,356.80 and 11,597.80

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Solution

The fourth proportional to 20,548.40, 28,356.80 and 11,597.80 is: 16,004.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.40 : 28,356.80 = 11,597.80 : x
  2. Step 2: Convert to fraction form
    20,548.40/28,356.80 = 11,597.80/x
  3. Step 3: Cross multiply
    20,548.40x = 28,356.80 × 11,597.80
  4. Step 4: Simplify right side
    20,548.40x = 328,876,495.04
  5. Step 5: Solve for x
    x = 328,876,495.04/20,548.40
  6. Step 6: Final answer
    x = 16,004.97

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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.