Home / 20,955.51-28,918.35-11,523.87

Finding the Fourth Proportional to 20,955.51, 28,918.35 and 11,523.87

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Solution

The fourth proportional to 20,955.51, 28,918.35 and 11,523.87 is: 15,902.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.51 : 28,918.35 = 11,523.87 : x
  2. Step 2: Convert to fraction form
    20,955.51/28,918.35 = 11,523.87/x
  3. Step 3: Cross multiply
    20,955.51x = 28,918.35 × 11,523.87
  4. Step 4: Simplify right side
    20,955.51x = 333,251,306.01
  5. Step 5: Solve for x
    x = 333,251,306.01/20,955.51
  6. Step 6: Final answer
    x = 15,902.80

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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.