Home / 19,899.60-27,456.48-12,817.50

Finding the Fourth Proportional to 19,899.60, 27,456.48 and 12,817.50

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Solution

The fourth proportional to 19,899.60, 27,456.48 and 12,817.50 is: 17,684.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,899.60 : 27,456.48 = 12,817.50 : x
  2. Step 2: Convert to fraction form
    19,899.60/27,456.48 = 12,817.50/x
  3. Step 3: Cross multiply
    19,899.60x = 27,456.48 × 12,817.50
  4. Step 4: Simplify right side
    19,899.60x = 351,923,432.40
  5. Step 5: Solve for x
    x = 351,923,432.40/19,899.60
  6. Step 6: Final answer
    x = 17,684.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.