Home / 12,132.64-18,182.76-10,390.06

Finding the Fourth Proportional to 12,132.64, 18,182.76 and 10,390.06

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Solution

The fourth proportional to 12,132.64, 18,182.76 and 10,390.06 is: 15,571.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132.64 : 18,182.76 = 10,390.06 : x
  2. Step 2: Convert to fraction form
    12,132.64/18,182.76 = 10,390.06/x
  3. Step 3: Cross multiply
    12,132.64x = 18,182.76 × 10,390.06
  4. Step 4: Simplify right side
    12,132.64x = 188,919,967.37
  5. Step 5: Solve for x
    x = 188,919,967.37/12,132.64
  6. Step 6: Final answer
    x = 15,571.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.