Home / 13,289.28-19,926.63-4,520.76

Finding the Fourth Proportional to 13,289.28, 19,926.63 and 4,520.76

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Solution

The fourth proportional to 13,289.28, 19,926.63 and 4,520.76 is: 6,778.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.28 : 19,926.63 = 4,520.76 : x
  2. Step 2: Convert to fraction form
    13,289.28/19,926.63 = 4,520.76/x
  3. Step 3: Cross multiply
    13,289.28x = 19,926.63 × 4,520.76
  4. Step 4: Simplify right side
    13,289.28x = 90,083,511.84
  5. Step 5: Solve for x
    x = 90,083,511.84/13,289.28
  6. Step 6: Final answer
    x = 6,778.66

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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.