Home / 18,126.72-27,184.32-12,320.64

Finding the Fourth Proportional to 18,126.72, 27,184.32 and 12,320.64

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Solution

The fourth proportional to 18,126.72, 27,184.32 and 12,320.64 is: 18,477.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126.72 : 27,184.32 = 12,320.64 : x
  2. Step 2: Convert to fraction form
    18,126.72/27,184.32 = 12,320.64/x
  3. Step 3: Cross multiply
    18,126.72x = 27,184.32 × 12,320.64
  4. Step 4: Simplify right side
    18,126.72x = 334,928,220.36
  5. Step 5: Solve for x
    x = 334,928,220.36/18,126.72
  6. Step 6: Final answer
    x = 18,477.04

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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.