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Finding the Fourth Proportional to 14,363.22, 19,820.88 and 7,989.80

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Solution

The fourth proportional to 14,363.22, 19,820.88 and 7,989.80 is: 11,025.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,363.22 : 19,820.88 = 7,989.80 : x
  2. Step 2: Convert to fraction form
    14,363.22/19,820.88 = 7,989.80/x
  3. Step 3: Cross multiply
    14,363.22x = 19,820.88 × 7,989.80
  4. Step 4: Simplify right side
    14,363.22x = 158,364,867.02
  5. Step 5: Solve for x
    x = 158,364,867.02/14,363.22
  6. Step 6: Final answer
    x = 11,025.72

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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.