Home / 20,682.61-28,543.47-11,730.88

Finding the Fourth Proportional to 20,682.61, 28,543.47 and 11,730.88

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Solution

The fourth proportional to 20,682.61, 28,543.47 and 11,730.88 is: 16,189.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.61 : 28,543.47 = 11,730.88 : x
  2. Step 2: Convert to fraction form
    20,682.61/28,543.47 = 11,730.88/x
  3. Step 3: Cross multiply
    20,682.61x = 28,543.47 × 11,730.88
  4. Step 4: Simplify right side
    20,682.61x = 334,840,021.35
  5. Step 5: Solve for x
    x = 334,840,021.35/20,682.61
  6. Step 6: Final answer
    x = 16,189.45

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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.