Home / 18,835.24-25,990.40-11,177.30

Finding the Fourth Proportional to 18,835.24, 25,990.40 and 11,177.30

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Solution

The fourth proportional to 18,835.24, 25,990.40 and 11,177.30 is: 15,423.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,835.24 : 25,990.40 = 11,177.30 : x
  2. Step 2: Convert to fraction form
    18,835.24/25,990.40 = 11,177.30/x
  3. Step 3: Cross multiply
    18,835.24x = 25,990.40 × 11,177.30
  4. Step 4: Simplify right side
    18,835.24x = 290,502,497.92
  5. Step 5: Solve for x
    x = 290,502,497.92/18,835.24
  6. Step 6: Final answer
    x = 15,423.35

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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.