Home / 21,190.13-31,785.20-16,513.64

Finding the Fourth Proportional to 21,190.13, 31,785.20 and 16,513.64

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Solution

The fourth proportional to 21,190.13, 31,785.20 and 16,513.64 is: 24,770.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.13 : 31,785.20 = 16,513.64 : x
  2. Step 2: Convert to fraction form
    21,190.13/31,785.20 = 16,513.64/x
  3. Step 3: Cross multiply
    21,190.13x = 31,785.20 × 16,513.64
  4. Step 4: Simplify right side
    21,190.13x = 524,889,108.63
  5. Step 5: Solve for x
    x = 524,889,108.63/21,190.13
  6. Step 6: Final answer
    x = 24,770.46

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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.