Home / 13,780.46-19,021.33-8,114.76

Finding the Fourth Proportional to 13,780.46, 19,021.33 and 8,114.76

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Solution

The fourth proportional to 13,780.46, 19,021.33 and 8,114.76 is: 11,200.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.46 : 19,021.33 = 8,114.76 : x
  2. Step 2: Convert to fraction form
    13,780.46/19,021.33 = 8,114.76/x
  3. Step 3: Cross multiply
    13,780.46x = 19,021.33 × 8,114.76
  4. Step 4: Simplify right side
    13,780.46x = 154,353,527.83
  5. Step 5: Solve for x
    x = 154,353,527.83/13,780.46
  6. Step 6: Final answer
    x = 11,200.90

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Half scale
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Double scale
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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.