Home / 26,430.40-39,649.20-9,786.40

Finding the Fourth Proportional to 26,430.40, 39,649.20 and 9,786.40

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Solution

The fourth proportional to 26,430.40, 39,649.20 and 9,786.40 is: 14,680.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,430.40 : 39,649.20 = 9,786.40 : x
  2. Step 2: Convert to fraction form
    26,430.40/39,649.20 = 9,786.40/x
  3. Step 3: Cross multiply
    26,430.40x = 39,649.20 × 9,786.40
  4. Step 4: Simplify right side
    26,430.40x = 388,022,930.88
  5. Step 5: Solve for x
    x = 388,022,930.88/26,430.40
  6. Step 6: Final answer
    x = 14,680.93

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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.