Home / 12,390.77-18,568.71-9,604.41

Finding the Fourth Proportional to 12,390.77, 18,568.71 and 9,604.41

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Solution

The fourth proportional to 12,390.77, 18,568.71 and 9,604.41 is: 14,393.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.77 : 18,568.71 = 9,604.41 : x
  2. Step 2: Convert to fraction form
    12,390.77/18,568.71 = 9,604.41/x
  3. Step 3: Cross multiply
    12,390.77x = 18,568.71 × 9,604.41
  4. Step 4: Simplify right side
    12,390.77x = 178,341,434.38
  5. Step 5: Solve for x
    x = 178,341,434.38/12,390.77
  6. Step 6: Final answer
    x = 14,393.08

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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.