Home / 13,688.48-20,556.41-13,065.18

Finding the Fourth Proportional to 13,688.48, 20,556.41 and 13,065.18

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Solution

The fourth proportional to 13,688.48, 20,556.41 and 13,065.18 is: 19,620.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.48 : 20,556.41 = 13,065.18 : x
  2. Step 2: Convert to fraction form
    13,688.48/20,556.41 = 13,065.18/x
  3. Step 3: Cross multiply
    13,688.48x = 20,556.41 × 13,065.18
  4. Step 4: Simplify right side
    13,688.48x = 268,573,131.48
  5. Step 5: Solve for x
    x = 268,573,131.48/13,688.48
  6. Step 6: Final answer
    x = 19,620.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.