Home / 20,725.70-28,601.45-11,294.25

Finding the Fourth Proportional to 20,725.70, 28,601.45 and 11,294.25

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Solution

The fourth proportional to 20,725.70, 28,601.45 and 11,294.25 is: 15,586.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.70 : 28,601.45 = 11,294.25 : x
  2. Step 2: Convert to fraction form
    20,725.70/28,601.45 = 11,294.25/x
  3. Step 3: Cross multiply
    20,725.70x = 28,601.45 × 11,294.25
  4. Step 4: Simplify right side
    20,725.70x = 323,031,870.19
  5. Step 5: Solve for x
    x = 323,031,870.19/20,725.70
  6. Step 6: Final answer
    x = 15,586.06

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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.