Home / 13,920.48-20,856.35-11,595.38

Finding the Fourth Proportional to 13,920.48, 20,856.35 and 11,595.38

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Solution

The fourth proportional to 13,920.48, 20,856.35 and 11,595.38 is: 17,372.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.48 : 20,856.35 = 11,595.38 : x
  2. Step 2: Convert to fraction form
    13,920.48/20,856.35 = 11,595.38/x
  3. Step 3: Cross multiply
    13,920.48x = 20,856.35 × 11,595.38
  4. Step 4: Simplify right side
    13,920.48x = 241,837,141.40
  5. Step 5: Solve for x
    x = 241,837,141.40/13,920.48
  6. Step 6: Final answer
    x = 17,372.76

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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.