Home / 13,382.58-18,475.32-9,140.01

Finding the Fourth Proportional to 13,382.58, 18,475.32 and 9,140.01

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Solution

The fourth proportional to 13,382.58, 18,475.32 and 9,140.01 is: 12,618.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.58 : 18,475.32 = 9,140.01 : x
  2. Step 2: Convert to fraction form
    13,382.58/18,475.32 = 9,140.01/x
  3. Step 3: Cross multiply
    13,382.58x = 18,475.32 × 9,140.01
  4. Step 4: Simplify right side
    13,382.58x = 168,864,609.55
  5. Step 5: Solve for x
    x = 168,864,609.55/13,382.58
  6. Step 6: Final answer
    x = 12,618.24

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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.