Home / 21,204.40-31,768.20-17,287.60

Finding the Fourth Proportional to 21,204.40, 31,768.20 and 17,287.60

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Solution

The fourth proportional to 21,204.40, 31,768.20 and 17,287.60 is: 25,900.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.40 : 31,768.20 = 17,287.60 : x
  2. Step 2: Convert to fraction form
    21,204.40/31,768.20 = 17,287.60/x
  3. Step 3: Cross multiply
    21,204.40x = 31,768.20 × 17,287.60
  4. Step 4: Simplify right side
    21,204.40x = 549,195,934.32
  5. Step 5: Solve for x
    x = 549,195,934.32/21,204.40
  6. Step 6: Final answer
    x = 25,900.09

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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.