Home / 19,842.55-27,381.85-10,890.20

Finding the Fourth Proportional to 19,842.55, 27,381.85 and 10,890.20

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Solution

The fourth proportional to 19,842.55, 27,381.85 and 10,890.20 is: 15,028.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,842.55 : 27,381.85 = 10,890.20 : x
  2. Step 2: Convert to fraction form
    19,842.55/27,381.85 = 10,890.20/x
  3. Step 3: Cross multiply
    19,842.55x = 27,381.85 × 10,890.20
  4. Step 4: Simplify right side
    19,842.55x = 298,193,822.87
  5. Step 5: Solve for x
    x = 298,193,822.87/19,842.55
  6. Step 6: Final answer
    x = 15,028.00

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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.