Home / 13,530.19-18,671.61-7,561.85

Finding the Fourth Proportional to 13,530.19, 18,671.61 and 7,561.85

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Solution

The fourth proportional to 13,530.19, 18,671.61 and 7,561.85 is: 10,435.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.19 : 18,671.61 = 7,561.85 : x
  2. Step 2: Convert to fraction form
    13,530.19/18,671.61 = 7,561.85/x
  3. Step 3: Cross multiply
    13,530.19x = 18,671.61 × 7,561.85
  4. Step 4: Simplify right side
    13,530.19x = 141,191,914.08
  5. Step 5: Solve for x
    x = 141,191,914.08/13,530.19
  6. Step 6: Final answer
    x = 10,435.33

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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.