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Finding the Fourth Proportional to 18,123.99, 24,987.96 and 11,739.30

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Solution

The fourth proportional to 18,123.99, 24,987.96 and 11,739.30 is: 16,185.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.99 : 24,987.96 = 11,739.30 : x
  2. Step 2: Convert to fraction form
    18,123.99/24,987.96 = 11,739.30/x
  3. Step 3: Cross multiply
    18,123.99x = 24,987.96 × 11,739.30
  4. Step 4: Simplify right side
    18,123.99x = 293,341,158.83
  5. Step 5: Solve for x
    x = 293,341,158.83/18,123.99
  6. Step 6: Final answer
    x = 16,185.24

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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.