Home / 20,315.62-28,035.63-11,362.55

Finding the Fourth Proportional to 20,315.62, 28,035.63 and 11,362.55

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Solution

The fourth proportional to 20,315.62, 28,035.63 and 11,362.55 is: 15,680.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.62 : 28,035.63 = 11,362.55 : x
  2. Step 2: Convert to fraction form
    20,315.62/28,035.63 = 11,362.55/x
  3. Step 3: Cross multiply
    20,315.62x = 28,035.63 × 11,362.55
  4. Step 4: Simplify right side
    20,315.62x = 318,556,360.01
  5. Step 5: Solve for x
    x = 318,556,360.01/20,315.62
  6. Step 6: Final answer
    x = 15,680.36

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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.