Home / 12,305.39-18,362.07-10,980.02

Finding the Fourth Proportional to 12,305.39, 18,362.07 and 10,980.02

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Solution

The fourth proportional to 12,305.39, 18,362.07 and 10,980.02 is: 16,384.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.39 : 18,362.07 = 10,980.02 : x
  2. Step 2: Convert to fraction form
    12,305.39/18,362.07 = 10,980.02/x
  3. Step 3: Cross multiply
    12,305.39x = 18,362.07 × 10,980.02
  4. Step 4: Simplify right side
    12,305.39x = 201,615,874.66
  5. Step 5: Solve for x
    x = 201,615,874.66/12,305.39
  6. Step 6: Final answer
    x = 16,384.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.