Home / 14,631.73-20,191.64-7,917.21

Finding the Fourth Proportional to 14,631.73, 20,191.64 and 7,917.21

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Solution

The fourth proportional to 14,631.73, 20,191.64 and 7,917.21 is: 10,925.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,631.73 : 20,191.64 = 7,917.21 : x
  2. Step 2: Convert to fraction form
    14,631.73/20,191.64 = 7,917.21/x
  3. Step 3: Cross multiply
    14,631.73x = 20,191.64 × 7,917.21
  4. Step 4: Simplify right side
    14,631.73x = 159,861,454.12
  5. Step 5: Solve for x
    x = 159,861,454.12/14,631.73
  6. Step 6: Final answer
    x = 10,925.67

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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.