Home / 18,890.24-26,090.28-12,591.68

Finding the Fourth Proportional to 18,890.24, 26,090.28 and 12,591.68

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Solution

The fourth proportional to 18,890.24, 26,090.28 and 12,591.68 is: 17,391.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.24 : 26,090.28 = 12,591.68 : x
  2. Step 2: Convert to fraction form
    18,890.24/26,090.28 = 12,591.68/x
  3. Step 3: Cross multiply
    18,890.24x = 26,090.28 × 12,591.68
  4. Step 4: Simplify right side
    18,890.24x = 328,520,456.87
  5. Step 5: Solve for x
    x = 328,520,456.87/18,890.24
  6. Step 6: Final answer
    x = 17,391.02

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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.