Home / 21,771.15-30,021.44-16,117.76

Finding the Fourth Proportional to 21,771.15, 30,021.44 and 16,117.76

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Solution

The fourth proportional to 21,771.15, 30,021.44 and 16,117.76 is: 22,225.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.15 : 30,021.44 = 16,117.76 : x
  2. Step 2: Convert to fraction form
    21,771.15/30,021.44 = 16,117.76/x
  3. Step 3: Cross multiply
    21,771.15x = 30,021.44 × 16,117.76
  4. Step 4: Simplify right side
    21,771.15x = 483,878,134.08
  5. Step 5: Solve for x
    x = 483,878,134.08/21,771.15
  6. Step 6: Final answer
    x = 22,225.66

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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.