Home / 10,859.40-14,986.20-6,142.80

Finding the Fourth Proportional to 10,859.40, 14,986.20 and 6,142.80

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Solution

The fourth proportional to 10,859.40, 14,986.20 and 6,142.80 is: 8,477.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.40 : 14,986.20 = 6,142.80 : x
  2. Step 2: Convert to fraction form
    10,859.40/14,986.20 = 6,142.80/x
  3. Step 3: Cross multiply
    10,859.40x = 14,986.20 × 6,142.80
  4. Step 4: Simplify right side
    10,859.40x = 92,057,229.36
  5. Step 5: Solve for x
    x = 92,057,229.36/10,859.40
  6. Step 6: Final answer
    x = 8,477.19

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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.