Home / 13,517.69-20,276.53-8,312.63

Finding the Fourth Proportional to 13,517.69, 20,276.53 and 8,312.63

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Solution

The fourth proportional to 13,517.69, 20,276.53 and 8,312.63 is: 12,468.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.69 : 20,276.53 = 8,312.63 : x
  2. Step 2: Convert to fraction form
    13,517.69/20,276.53 = 8,312.63/x
  3. Step 3: Cross multiply
    13,517.69x = 20,276.53 × 8,312.63
  4. Step 4: Simplify right side
    13,517.69x = 168,551,169.41
  5. Step 5: Solve for x
    x = 168,551,169.41/13,517.69
  6. Step 6: Final answer
    x = 12,468.94

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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.