Home / 10,852.80-14,979.60-6,138.60

Finding the Fourth Proportional to 10,852.80, 14,979.60 and 6,138.60

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Solution

The fourth proportional to 10,852.80, 14,979.60 and 6,138.60 is: 8,472.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,852.80 : 14,979.60 = 6,138.60 : x
  2. Step 2: Convert to fraction form
    10,852.80/14,979.60 = 6,138.60/x
  3. Step 3: Cross multiply
    10,852.80x = 14,979.60 × 6,138.60
  4. Step 4: Simplify right side
    10,852.80x = 91,953,772.56
  5. Step 5: Solve for x
    x = 91,953,772.56/10,852.80
  6. Step 6: Final answer
    x = 8,472.82

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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.