Home / 13,529.49-18,671.07-7,561.81

Finding the Fourth Proportional to 13,529.49, 18,671.07 and 7,561.81

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Solution

The fourth proportional to 13,529.49, 18,671.07 and 7,561.81 is: 10,435.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.49 : 18,671.07 = 7,561.81 : x
  2. Step 2: Convert to fraction form
    13,529.49/18,671.07 = 7,561.81/x
  3. Step 3: Cross multiply
    13,529.49x = 18,671.07 × 7,561.81
  4. Step 4: Simplify right side
    13,529.49x = 141,187,083.84
  5. Step 5: Solve for x
    x = 141,187,083.84/13,529.49
  6. Step 6: Final answer
    x = 10,435.51

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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.