Home / 10,128.14-13,981.09-6,150.53

Finding the Fourth Proportional to 10,128.14, 13,981.09 and 6,150.53

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Solution

The fourth proportional to 10,128.14, 13,981.09 and 6,150.53 is: 8,490.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.14 : 13,981.09 = 6,150.53 : x
  2. Step 2: Convert to fraction form
    10,128.14/13,981.09 = 6,150.53/x
  3. Step 3: Cross multiply
    10,128.14x = 13,981.09 × 6,150.53
  4. Step 4: Simplify right side
    10,128.14x = 85,991,043.57
  5. Step 5: Solve for x
    x = 85,991,043.57/10,128.14
  6. Step 6: Final answer
    x = 8,490.31

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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.