Home / 13,389.76-20,077.28-10,634.08

Finding the Fourth Proportional to 13,389.76, 20,077.28 and 10,634.08

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Solution

The fourth proportional to 13,389.76, 20,077.28 and 10,634.08 is: 15,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.76 : 20,077.28 = 10,634.08 : x
  2. Step 2: Convert to fraction form
    13,389.76/20,077.28 = 10,634.08/x
  3. Step 3: Cross multiply
    13,389.76x = 20,077.28 × 10,634.08
  4. Step 4: Simplify right side
    13,389.76x = 213,503,401.70
  5. Step 5: Solve for x
    x = 213,503,401.70/13,389.76
  6. Step 6: Final answer
    x = 15,945.27

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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.