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Finding the Fourth Proportional to 18,777.06, 28,133.96 and 11,358.96

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Solution

The fourth proportional to 18,777.06, 28,133.96 and 11,358.96 is: 17,019.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.06 : 28,133.96 = 11,358.96 : x
  2. Step 2: Convert to fraction form
    18,777.06/28,133.96 = 11,358.96/x
  3. Step 3: Cross multiply
    18,777.06x = 28,133.96 × 11,358.96
  4. Step 4: Simplify right side
    18,777.06x = 319,572,526.28
  5. Step 5: Solve for x
    x = 319,572,526.28/18,777.06
  6. Step 6: Final answer
    x = 17,019.31

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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.