Home / 14,099.38-21,130.70-7,859.14

Finding the Fourth Proportional to 14,099.38, 21,130.70 and 7,859.14

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Solution

The fourth proportional to 14,099.38, 21,130.70 and 7,859.14 is: 11,778.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,099.38 : 21,130.70 = 7,859.14 : x
  2. Step 2: Convert to fraction form
    14,099.38/21,130.70 = 7,859.14/x
  3. Step 3: Cross multiply
    14,099.38x = 21,130.70 × 7,859.14
  4. Step 4: Simplify right side
    14,099.38x = 166,069,129.60
  5. Step 5: Solve for x
    x = 166,069,129.60/14,099.38
  6. Step 6: Final answer
    x = 11,778.47

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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.