Home / 10,945.29-16,386.29-6,428.67

Finding the Fourth Proportional to 10,945.29, 16,386.29 and 6,428.67

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Solution

The fourth proportional to 10,945.29, 16,386.29 and 6,428.67 is: 9,624.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,945.29 : 16,386.29 = 6,428.67 : x
  2. Step 2: Convert to fraction form
    10,945.29/16,386.29 = 6,428.67/x
  3. Step 3: Cross multiply
    10,945.29x = 16,386.29 × 6,428.67
  4. Step 4: Simplify right side
    10,945.29x = 105,342,050.93
  5. Step 5: Solve for x
    x = 105,342,050.93/10,945.29
  6. Step 6: Final answer
    x = 9,624.42

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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.