Home / 13,164.48-18,168.96-7,574.40

Finding the Fourth Proportional to 13,164.48, 18,168.96 and 7,574.40

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Solution

The fourth proportional to 13,164.48, 18,168.96 and 7,574.40 is: 10,453.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.48 : 18,168.96 = 7,574.40 : x
  2. Step 2: Convert to fraction form
    13,164.48/18,168.96 = 7,574.40/x
  3. Step 3: Cross multiply
    13,164.48x = 18,168.96 × 7,574.40
  4. Step 4: Simplify right side
    13,164.48x = 137,618,970.62
  5. Step 5: Solve for x
    x = 137,618,970.62/13,164.48
  6. Step 6: Final answer
    x = 10,453.81

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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.