Home / 12,399.64-18,576.01-9,612.66

Finding the Fourth Proportional to 12,399.64, 18,576.01 and 9,612.66

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Solution

The fourth proportional to 12,399.64, 18,576.01 and 9,612.66 is: 14,400.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.64 : 18,576.01 = 9,612.66 : x
  2. Step 2: Convert to fraction form
    12,399.64/18,576.01 = 9,612.66/x
  3. Step 3: Cross multiply
    12,399.64x = 18,576.01 × 9,612.66
  4. Step 4: Simplify right side
    12,399.64x = 178,564,868.29
  5. Step 5: Solve for x
    x = 178,564,868.29/12,399.64
  6. Step 6: Final answer
    x = 14,400.81

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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.