Home / 13,072.32-18,039.84-7,767.36

Finding the Fourth Proportional to 13,072.32, 18,039.84 and 7,767.36

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Solution

The fourth proportional to 13,072.32, 18,039.84 and 7,767.36 is: 10,718.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.32 : 18,039.84 = 7,767.36 : x
  2. Step 2: Convert to fraction form
    13,072.32/18,039.84 = 7,767.36/x
  3. Step 3: Cross multiply
    13,072.32x = 18,039.84 × 7,767.36
  4. Step 4: Simplify right side
    13,072.32x = 140,121,931.62
  5. Step 5: Solve for x
    x = 140,121,931.62/13,072.32
  6. Step 6: Final answer
    x = 10,718.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.