Home / 21,173.32-31,952.12-20,467.49

Finding the Fourth Proportional to 21,173.32, 31,952.12 and 20,467.49

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Solution

The fourth proportional to 21,173.32, 31,952.12 and 20,467.49 is: 30,886.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.32 : 31,952.12 = 20,467.49 : x
  2. Step 2: Convert to fraction form
    21,173.32/31,952.12 = 20,467.49/x
  3. Step 3: Cross multiply
    21,173.32x = 31,952.12 × 20,467.49
  4. Step 4: Simplify right side
    21,173.32x = 653,979,827.63
  5. Step 5: Solve for x
    x = 653,979,827.63/21,173.32
  6. Step 6: Final answer
    x = 30,886.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.