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Finding the Fourth Proportional to 14,353.18, 19,808.80 and 7,981.96

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Solution

The fourth proportional to 14,353.18, 19,808.80 and 7,981.96 is: 11,015.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,353.18 : 19,808.80 = 7,981.96 : x
  2. Step 2: Convert to fraction form
    14,353.18/19,808.80 = 7,981.96/x
  3. Step 3: Cross multiply
    14,353.18x = 19,808.80 × 7,981.96
  4. Step 4: Simplify right side
    14,353.18x = 158,113,049.25
  5. Step 5: Solve for x
    x = 158,113,049.25/14,353.18
  6. Step 6: Final answer
    x = 11,015.89

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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.