Home / 13,087.64-18,066.84-8,613.74

Finding the Fourth Proportional to 13,087.64, 18,066.84 and 8,613.74

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Solution

The fourth proportional to 13,087.64, 18,066.84 and 8,613.74 is: 11,890.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.64 : 18,066.84 = 8,613.74 : x
  2. Step 2: Convert to fraction form
    13,087.64/18,066.84 = 8,613.74/x
  3. Step 3: Cross multiply
    13,087.64x = 18,066.84 × 8,613.74
  4. Step 4: Simplify right side
    13,087.64x = 155,623,062.38
  5. Step 5: Solve for x
    x = 155,623,062.38/13,087.64
  6. Step 6: Final answer
    x = 11,890.84

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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.