Home / 21,168.86-31,753.44-17,215.52

Finding the Fourth Proportional to 21,168.86, 31,753.44 and 17,215.52

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Solution

The fourth proportional to 21,168.86, 31,753.44 and 17,215.52 is: 25,823.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.86 : 31,753.44 = 17,215.52 : x
  2. Step 2: Convert to fraction form
    21,168.86/31,753.44 = 17,215.52/x
  3. Step 3: Cross multiply
    21,168.86x = 31,753.44 × 17,215.52
  4. Step 4: Simplify right side
    21,168.86x = 546,651,822.62
  5. Step 5: Solve for x
    x = 546,651,822.62/21,168.86
  6. Step 6: Final answer
    x = 25,823.40

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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.