Home / 20,103.06-30,154.59-11,840.65

Finding the Fourth Proportional to 20,103.06, 30,154.59 and 11,840.65

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Solution

The fourth proportional to 20,103.06, 30,154.59 and 11,840.65 is: 17,760.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.06 : 30,154.59 = 11,840.65 : x
  2. Step 2: Convert to fraction form
    20,103.06/30,154.59 = 11,840.65/x
  3. Step 3: Cross multiply
    20,103.06x = 30,154.59 × 11,840.65
  4. Step 4: Simplify right side
    20,103.06x = 357,049,946.08
  5. Step 5: Solve for x
    x = 357,049,946.08/20,103.06
  6. Step 6: Final answer
    x = 17,760.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.