Home / 13,568.08-18,711.45-9,311.63

Finding the Fourth Proportional to 13,568.08, 18,711.45 and 9,311.63

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Solution

The fourth proportional to 13,568.08, 18,711.45 and 9,311.63 is: 12,841.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.08 : 18,711.45 = 9,311.63 : x
  2. Step 2: Convert to fraction form
    13,568.08/18,711.45 = 9,311.63/x
  3. Step 3: Cross multiply
    13,568.08x = 18,711.45 × 9,311.63
  4. Step 4: Simplify right side
    13,568.08x = 174,234,099.16
  5. Step 5: Solve for x
    x = 174,234,099.16/13,568.08
  6. Step 6: Final answer
    x = 12,841.47

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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.