Home / 20,913.68-28,861.48-11,838.34

Finding the Fourth Proportional to 20,913.68, 28,861.48 and 11,838.34

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Solution

The fourth proportional to 20,913.68, 28,861.48 and 11,838.34 is: 16,337.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.68 : 28,861.48 = 11,838.34 : x
  2. Step 2: Convert to fraction form
    20,913.68/28,861.48 = 11,838.34/x
  3. Step 3: Cross multiply
    20,913.68x = 28,861.48 × 11,838.34
  4. Step 4: Simplify right side
    20,913.68x = 341,672,013.14
  5. Step 5: Solve for x
    x = 341,672,013.14/20,913.68
  6. Step 6: Final answer
    x = 16,337.25

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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.