Home / 20,829.40-31,250.38-18,624.12

Finding the Fourth Proportional to 20,829.40, 31,250.38 and 18,624.12

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Solution

The fourth proportional to 20,829.40, 31,250.38 and 18,624.12 is: 27,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.40 : 31,250.38 = 18,624.12 : x
  2. Step 2: Convert to fraction form
    20,829.40/31,250.38 = 18,624.12/x
  3. Step 3: Cross multiply
    20,829.40x = 31,250.38 × 18,624.12
  4. Step 4: Simplify right side
    20,829.40x = 582,010,827.17
  5. Step 5: Solve for x
    x = 582,010,827.17/20,829.40
  6. Step 6: Final answer
    x = 27,941.80

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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.