Home / 13,780.08-20,670.21-4,546.08

Finding the Fourth Proportional to 13,780.08, 20,670.21 and 4,546.08

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Solution

The fourth proportional to 13,780.08, 20,670.21 and 4,546.08 is: 6,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.08 : 20,670.21 = 4,546.08 : x
  2. Step 2: Convert to fraction form
    13,780.08/20,670.21 = 4,546.08/x
  3. Step 3: Cross multiply
    13,780.08x = 20,670.21 × 4,546.08
  4. Step 4: Simplify right side
    13,780.08x = 93,968,428.28
  5. Step 5: Solve for x
    x = 93,968,428.28/13,780.08
  6. Step 6: Final answer
    x = 6,819.15

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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.