Home / 12,133.64-18,204.90-5,115.41

Finding the Fourth Proportional to 12,133.64, 18,204.90 and 5,115.41

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Solution

The fourth proportional to 12,133.64, 18,204.90 and 5,115.41 is: 7,674.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,133.64 : 18,204.90 = 5,115.41 : x
  2. Step 2: Convert to fraction form
    12,133.64/18,204.90 = 5,115.41/x
  3. Step 3: Cross multiply
    12,133.64x = 18,204.90 × 5,115.41
  4. Step 4: Simplify right side
    12,133.64x = 93,125,527.51
  5. Step 5: Solve for x
    x = 93,125,527.51/12,133.64
  6. Step 6: Final answer
    x = 7,674.99

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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.