Home / 12,951.89-19,428.24-3,591.11

Finding the Fourth Proportional to 12,951.89, 19,428.24 and 3,591.11

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Solution

The fourth proportional to 12,951.89, 19,428.24 and 3,591.11 is: 5,386.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,951.89 : 19,428.24 = 3,591.11 : x
  2. Step 2: Convert to fraction form
    12,951.89/19,428.24 = 3,591.11/x
  3. Step 3: Cross multiply
    12,951.89x = 19,428.24 × 3,591.11
  4. Step 4: Simplify right side
    12,951.89x = 69,768,849.81
  5. Step 5: Solve for x
    x = 69,768,849.81/12,951.89
  6. Step 6: Final answer
    x = 5,386.77

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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.