Home / 12,054.80-18,053.40-7,389.20

Finding the Fourth Proportional to 12,054.80, 18,053.40 and 7,389.20

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Solution

The fourth proportional to 12,054.80, 18,053.40 and 7,389.20 is: 11,066.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,054.80 : 18,053.40 = 7,389.20 : x
  2. Step 2: Convert to fraction form
    12,054.80/18,053.40 = 7,389.20/x
  3. Step 3: Cross multiply
    12,054.80x = 18,053.40 × 7,389.20
  4. Step 4: Simplify right side
    12,054.80x = 133,400,183.28
  5. Step 5: Solve for x
    x = 133,400,183.28/12,054.80
  6. Step 6: Final answer
    x = 11,066.15

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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.