Home / 20,725.95-28,601.80-11,294.51

Finding the Fourth Proportional to 20,725.95, 28,601.80 and 11,294.51

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Solution

The fourth proportional to 20,725.95, 28,601.80 and 11,294.51 is: 15,586.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.95 : 28,601.80 = 11,294.51 : x
  2. Step 2: Convert to fraction form
    20,725.95/28,601.80 = 11,294.51/x
  3. Step 3: Cross multiply
    20,725.95x = 28,601.80 × 11,294.51
  4. Step 4: Simplify right side
    20,725.95x = 323,043,316.12
  5. Step 5: Solve for x
    x = 323,043,316.12/20,725.95
  6. Step 6: Final answer
    x = 15,586.42

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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.