Home / 20,884.48-28,814.18-11,931.45

Finding the Fourth Proportional to 20,884.48, 28,814.18 and 11,931.45

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Solution

The fourth proportional to 20,884.48, 28,814.18 and 11,931.45 is: 16,461.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.48 : 28,814.18 = 11,931.45 : x
  2. Step 2: Convert to fraction form
    20,884.48/28,814.18 = 11,931.45/x
  3. Step 3: Cross multiply
    20,884.48x = 28,814.18 × 11,931.45
  4. Step 4: Simplify right side
    20,884.48x = 343,795,009.44
  5. Step 5: Solve for x
    x = 343,795,009.44/20,884.48
  6. Step 6: Final answer
    x = 16,461.74

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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.