Home / 10,859.50-14,986.86-6,143.80

Finding the Fourth Proportional to 10,859.50, 14,986.86 and 6,143.80

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Solution

The fourth proportional to 10,859.50, 14,986.86 and 6,143.80 is: 8,478.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.50 : 14,986.86 = 6,143.80 : x
  2. Step 2: Convert to fraction form
    10,859.50/14,986.86 = 6,143.80/x
  3. Step 3: Cross multiply
    10,859.50x = 14,986.86 × 6,143.80
  4. Step 4: Simplify right side
    10,859.50x = 92,076,270.47
  5. Step 5: Solve for x
    x = 92,076,270.47/10,859.50
  6. Step 6: Final answer
    x = 8,478.87

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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.