Home / 13,271.64-18,321.84-9,045.08

Finding the Fourth Proportional to 13,271.64, 18,321.84 and 9,045.08

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Solution

The fourth proportional to 13,271.64, 18,321.84 and 9,045.08 is: 12,486.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,271.64 : 18,321.84 = 9,045.08 : x
  2. Step 2: Convert to fraction form
    13,271.64/18,321.84 = 9,045.08/x
  3. Step 3: Cross multiply
    13,271.64x = 18,321.84 × 9,045.08
  4. Step 4: Simplify right side
    13,271.64x = 165,722,508.55
  5. Step 5: Solve for x
    x = 165,722,508.55/13,271.64
  6. Step 6: Final answer
    x = 12,486.97

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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.