Home / 13,688.73-20,556.48-8,176.26

Finding the Fourth Proportional to 13,688.73, 20,556.48 and 8,176.26

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Solution

The fourth proportional to 13,688.73, 20,556.48 and 8,176.26 is: 12,278.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.73 : 20,556.48 = 8,176.26 : x
  2. Step 2: Convert to fraction form
    13,688.73/20,556.48 = 8,176.26/x
  3. Step 3: Cross multiply
    13,688.73x = 20,556.48 × 8,176.26
  4. Step 4: Simplify right side
    13,688.73x = 168,075,125.16
  5. Step 5: Solve for x
    x = 168,075,125.16/13,688.73
  6. Step 6: Final answer
    x = 12,278.36

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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.