Home / 13,164.72-18,153.36-9,388.32

Finding the Fourth Proportional to 13,164.72, 18,153.36 and 9,388.32

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Solution

The fourth proportional to 13,164.72, 18,153.36 and 9,388.32 is: 12,945.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.72 : 18,153.36 = 9,388.32 : x
  2. Step 2: Convert to fraction form
    13,164.72/18,153.36 = 9,388.32/x
  3. Step 3: Cross multiply
    13,164.72x = 18,153.36 × 9,388.32
  4. Step 4: Simplify right side
    13,164.72x = 170,429,552.76
  5. Step 5: Solve for x
    x = 170,429,552.76/13,164.72
  6. Step 6: Final answer
    x = 12,945.93

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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.