Home / 13,619.54-20,428.59-8,000.30

Finding the Fourth Proportional to 13,619.54, 20,428.59 and 8,000.30

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Solution

The fourth proportional to 13,619.54, 20,428.59 and 8,000.30 is: 12,000.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.54 : 20,428.59 = 8,000.30 : x
  2. Step 2: Convert to fraction form
    13,619.54/20,428.59 = 8,000.30/x
  3. Step 3: Cross multiply
    13,619.54x = 20,428.59 × 8,000.30
  4. Step 4: Simplify right side
    13,619.54x = 163,434,848.58
  5. Step 5: Solve for x
    x = 163,434,848.58/13,619.54
  6. Step 6: Final answer
    x = 12,000.03

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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.