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Finding the Fourth Proportional to 18,459.72, 27,686.16 and 6,769.08

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Solution

The fourth proportional to 18,459.72, 27,686.16 and 6,769.08 is: 10,152.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,459.72 : 27,686.16 = 6,769.08 : x
  2. Step 2: Convert to fraction form
    18,459.72/27,686.16 = 6,769.08/x
  3. Step 3: Cross multiply
    18,459.72x = 27,686.16 × 6,769.08
  4. Step 4: Simplify right side
    18,459.72x = 187,409,831.93
  5. Step 5: Solve for x
    x = 187,409,831.93/18,459.72
  6. Step 6: Final answer
    x = 10,152.37

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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.