Home / 11,685.47-16,125.90-6,649.66

Finding the Fourth Proportional to 11,685.47, 16,125.90 and 6,649.66

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Solution

The fourth proportional to 11,685.47, 16,125.90 and 6,649.66 is: 9,176.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.47 : 16,125.90 = 6,649.66 : x
  2. Step 2: Convert to fraction form
    11,685.47/16,125.90 = 6,649.66/x
  3. Step 3: Cross multiply
    11,685.47x = 16,125.90 × 6,649.66
  4. Step 4: Simplify right side
    11,685.47x = 107,231,688.74
  5. Step 5: Solve for x
    x = 107,231,688.74/11,685.47
  6. Step 6: Final answer
    x = 9,176.50

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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.