Home / 10,786.40-14,879.36-7,423.28

Finding the Fourth Proportional to 10,786.40, 14,879.36 and 7,423.28

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Solution

The fourth proportional to 10,786.40, 14,879.36 and 7,423.28 is: 10,240.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786.40 : 14,879.36 = 7,423.28 : x
  2. Step 2: Convert to fraction form
    10,786.40/14,879.36 = 7,423.28/x
  3. Step 3: Cross multiply
    10,786.40x = 14,879.36 × 7,423.28
  4. Step 4: Simplify right side
    10,786.40x = 110,453,655.50
  5. Step 5: Solve for x
    x = 110,453,655.50/10,786.40
  6. Step 6: Final answer
    x = 10,240.09

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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.