Home / 11,987.79-16,543.20-6,682.59

Finding the Fourth Proportional to 11,987.79, 16,543.20 and 6,682.59

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Solution

The fourth proportional to 11,987.79, 16,543.20 and 6,682.59 is: 9,222.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.79 : 16,543.20 = 6,682.59 : x
  2. Step 2: Convert to fraction form
    11,987.79/16,543.20 = 6,682.59/x
  3. Step 3: Cross multiply
    11,987.79x = 16,543.20 × 6,682.59
  4. Step 4: Simplify right side
    11,987.79x = 110,551,422.89
  5. Step 5: Solve for x
    x = 110,551,422.89/11,987.79
  6. Step 6: Final answer
    x = 9,222.00

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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.