Home / 21,771.40-30,047.58-15,741.22

Finding the Fourth Proportional to 21,771.40, 30,047.58 and 15,741.22

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Solution

The fourth proportional to 21,771.40, 30,047.58 and 15,741.22 is: 21,725.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.40 : 30,047.58 = 15,741.22 : x
  2. Step 2: Convert to fraction form
    21,771.40/30,047.58 = 15,741.22/x
  3. Step 3: Cross multiply
    21,771.40x = 30,047.58 × 15,741.22
  4. Step 4: Simplify right side
    21,771.40x = 472,985,567.25
  5. Step 5: Solve for x
    x = 472,985,567.25/21,771.40
  6. Step 6: Final answer
    x = 21,725.09

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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.