Home / 10,939.60-16,409.63-3,920.07

Finding the Fourth Proportional to 10,939.60, 16,409.63 and 3,920.07

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Solution

The fourth proportional to 10,939.60, 16,409.63 and 3,920.07 is: 5,880.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.60 : 16,409.63 = 3,920.07 : x
  2. Step 2: Convert to fraction form
    10,939.60/16,409.63 = 3,920.07/x
  3. Step 3: Cross multiply
    10,939.60x = 16,409.63 × 3,920.07
  4. Step 4: Simplify right side
    10,939.60x = 64,326,898.27
  5. Step 5: Solve for x
    x = 64,326,898.27/10,939.60
  6. Step 6: Final answer
    x = 5,880.19

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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.