Home / 14,007.30-21,006.90-5,121.60

Finding the Fourth Proportional to 14,007.30, 21,006.90 and 5,121.60

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Solution

The fourth proportional to 14,007.30, 21,006.90 and 5,121.60 is: 7,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.30 : 21,006.90 = 5,121.60 : x
  2. Step 2: Convert to fraction form
    14,007.30/21,006.90 = 5,121.60/x
  3. Step 3: Cross multiply
    14,007.30x = 21,006.90 × 5,121.60
  4. Step 4: Simplify right side
    14,007.30x = 107,588,939.04
  5. Step 5: Solve for x
    x = 107,588,939.04/14,007.30
  6. Step 6: Final answer
    x = 7,680.92

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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.