Home / 15,455.27-21,336.55-12,090.94

Finding the Fourth Proportional to 15,455.27, 21,336.55 and 12,090.94

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Solution

The fourth proportional to 15,455.27, 21,336.55 and 12,090.94 is: 16,691.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.27 : 21,336.55 = 12,090.94 : x
  2. Step 2: Convert to fraction form
    15,455.27/21,336.55 = 12,090.94/x
  3. Step 3: Cross multiply
    15,455.27x = 21,336.55 × 12,090.94
  4. Step 4: Simplify right side
    15,455.27x = 257,978,862.29
  5. Step 5: Solve for x
    x = 257,978,862.29/15,455.27
  6. Step 6: Final answer
    x = 16,691.96

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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.