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Finding the Fourth Proportional to 14,483.55, 19,990.42 and 8,820.17

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Solution

The fourth proportional to 14,483.55, 19,990.42 and 8,820.17 is: 12,173.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,483.55 : 19,990.42 = 8,820.17 : x
  2. Step 2: Convert to fraction form
    14,483.55/19,990.42 = 8,820.17/x
  3. Step 3: Cross multiply
    14,483.55x = 19,990.42 × 8,820.17
  4. Step 4: Simplify right side
    14,483.55x = 176,318,902.77
  5. Step 5: Solve for x
    x = 176,318,902.77/14,483.55
  6. Step 6: Final answer
    x = 12,173.74

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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.