Home / 13,688.27-18,886.56-8,310.59

Finding the Fourth Proportional to 13,688.27, 18,886.56 and 8,310.59

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Solution

The fourth proportional to 13,688.27, 18,886.56 and 8,310.59 is: 11,466.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.27 : 18,886.56 = 8,310.59 : x
  2. Step 2: Convert to fraction form
    13,688.27/18,886.56 = 8,310.59/x
  3. Step 3: Cross multiply
    13,688.27x = 18,886.56 × 8,310.59
  4. Step 4: Simplify right side
    13,688.27x = 156,958,362.24
  5. Step 5: Solve for x
    x = 156,958,362.24/13,688.27
  6. Step 6: Final answer
    x = 11,466.64

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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.