Home / 21,923.61-30,247.40-13,416.86

Finding the Fourth Proportional to 21,923.61, 30,247.40 and 13,416.86

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Solution

The fourth proportional to 21,923.61, 30,247.40 and 13,416.86 is: 18,510.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.61 : 30,247.40 = 13,416.86 : x
  2. Step 2: Convert to fraction form
    21,923.61/30,247.40 = 13,416.86/x
  3. Step 3: Cross multiply
    21,923.61x = 30,247.40 × 13,416.86
  4. Step 4: Simplify right side
    21,923.61x = 405,825,131.16
  5. Step 5: Solve for x
    x = 405,825,131.16/21,923.61
  6. Step 6: Final answer
    x = 18,510.87

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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.