Home / 21,811.08-30,108.36-14,747.04

Finding the Fourth Proportional to 21,811.08, 30,108.36 and 14,747.04

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Solution

The fourth proportional to 21,811.08, 30,108.36 and 14,747.04 is: 20,357.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.08 : 30,108.36 = 14,747.04 : x
  2. Step 2: Convert to fraction form
    21,811.08/30,108.36 = 14,747.04/x
  3. Step 3: Cross multiply
    21,811.08x = 30,108.36 × 14,747.04
  4. Step 4: Simplify right side
    21,811.08x = 444,009,189.25
  5. Step 5: Solve for x
    x = 444,009,189.25/21,811.08
  6. Step 6: Final answer
    x = 20,357.05

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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.