Home / 10,866.29-16,288.50-4,289.90

Finding the Fourth Proportional to 10,866.29, 16,288.50 and 4,289.90

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Solution

The fourth proportional to 10,866.29, 16,288.50 and 4,289.90 is: 6,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,866.29 : 16,288.50 = 4,289.90 : x
  2. Step 2: Convert to fraction form
    10,866.29/16,288.50 = 4,289.90/x
  3. Step 3: Cross multiply
    10,866.29x = 16,288.50 × 4,289.90
  4. Step 4: Simplify right side
    10,866.29x = 69,876,036.15
  5. Step 5: Solve for x
    x = 69,876,036.15/10,866.29
  6. Step 6: Final answer
    x = 6,430.53

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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.