Home / 13,204.69-18,216.90-8,160.16

Finding the Fourth Proportional to 13,204.69, 18,216.90 and 8,160.16

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Solution

The fourth proportional to 13,204.69, 18,216.90 and 8,160.16 is: 11,257.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.69 : 18,216.90 = 8,160.16 : x
  2. Step 2: Convert to fraction form
    13,204.69/18,216.90 = 8,160.16/x
  3. Step 3: Cross multiply
    13,204.69x = 18,216.90 × 8,160.16
  4. Step 4: Simplify right side
    13,204.69x = 148,652,807.32
  5. Step 5: Solve for x
    x = 148,652,807.32/13,204.69
  6. Step 6: Final answer
    x = 11,257.58

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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.