Home / 20,695.12-30,968.84-17,931.28

Finding the Fourth Proportional to 20,695.12, 30,968.84 and 17,931.28

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Solution

The fourth proportional to 20,695.12, 30,968.84 and 17,931.28 is: 26,832.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.12 : 30,968.84 = 17,931.28 : x
  2. Step 2: Convert to fraction form
    20,695.12/30,968.84 = 17,931.28/x
  3. Step 3: Cross multiply
    20,695.12x = 30,968.84 × 17,931.28
  4. Step 4: Simplify right side
    20,695.12x = 555,310,941.32
  5. Step 5: Solve for x
    x = 555,310,941.32/20,695.12
  6. Step 6: Final answer
    x = 26,832.94

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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.