Home / 13,318.50-19,958.71-9,780.76

Finding the Fourth Proportional to 13,318.50, 19,958.71 and 9,780.76

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Solution

The fourth proportional to 13,318.50, 19,958.71 and 9,780.76 is: 14,657.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.50 : 19,958.71 = 9,780.76 : x
  2. Step 2: Convert to fraction form
    13,318.50/19,958.71 = 9,780.76/x
  3. Step 3: Cross multiply
    13,318.50x = 19,958.71 × 9,780.76
  4. Step 4: Simplify right side
    13,318.50x = 195,211,352.42
  5. Step 5: Solve for x
    x = 195,211,352.42/13,318.50
  6. Step 6: Final answer
    x = 14,657.16

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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.