Home / 19,655.75-27,128.68-11,158.67

Finding the Fourth Proportional to 19,655.75, 27,128.68 and 11,158.67

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Solution

The fourth proportional to 19,655.75, 27,128.68 and 11,158.67 is: 15,401.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,655.75 : 27,128.68 = 11,158.67 : x
  2. Step 2: Convert to fraction form
    19,655.75/27,128.68 = 11,158.67/x
  3. Step 3: Cross multiply
    19,655.75x = 27,128.68 × 11,158.67
  4. Step 4: Simplify right side
    19,655.75x = 302,720,027.58
  5. Step 5: Solve for x
    x = 302,720,027.58/19,655.75
  6. Step 6: Final answer
    x = 15,401.09

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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.