Home / 12,406.10-17,121.90-7,102.62

Finding the Fourth Proportional to 12,406.10, 17,121.90 and 7,102.62

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Solution

The fourth proportional to 12,406.10, 17,121.90 and 7,102.62 is: 9,802.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.10 : 17,121.90 = 7,102.62 : x
  2. Step 2: Convert to fraction form
    12,406.10/17,121.90 = 7,102.62/x
  3. Step 3: Cross multiply
    12,406.10x = 17,121.90 × 7,102.62
  4. Step 4: Simplify right side
    12,406.10x = 121,610,349.38
  5. Step 5: Solve for x
    x = 121,610,349.38/12,406.10
  6. Step 6: Final answer
    x = 9,802.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.