Home / 14,109.36-21,153.24-6,989.28

Finding the Fourth Proportional to 14,109.36, 21,153.24 and 6,989.28

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Solution

The fourth proportional to 14,109.36, 21,153.24 and 6,989.28 is: 10,478.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.36 : 21,153.24 = 6,989.28 : x
  2. Step 2: Convert to fraction form
    14,109.36/21,153.24 = 6,989.28/x
  3. Step 3: Cross multiply
    14,109.36x = 21,153.24 × 6,989.28
  4. Step 4: Simplify right side
    14,109.36x = 147,845,917.27
  5. Step 5: Solve for x
    x = 147,845,917.27/14,109.36
  6. Step 6: Final answer
    x = 10,478.57

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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.