Home / 20,654.95-28,504.01-11,223.51

Finding the Fourth Proportional to 20,654.95, 28,504.01 and 11,223.51

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Solution

The fourth proportional to 20,654.95, 28,504.01 and 11,223.51 is: 15,488.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.95 : 28,504.01 = 11,223.51 : x
  2. Step 2: Convert to fraction form
    20,654.95/28,504.01 = 11,223.51/x
  3. Step 3: Cross multiply
    20,654.95x = 28,504.01 × 11,223.51
  4. Step 4: Simplify right side
    20,654.95x = 319,914,985.16
  5. Step 5: Solve for x
    x = 319,914,985.16/20,654.95
  6. Step 6: Final answer
    x = 15,488.54

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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.