Home / 20,913.72-28,862.94-11,483.70

Finding the Fourth Proportional to 20,913.72, 28,862.94 and 11,483.70

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Solution

The fourth proportional to 20,913.72, 28,862.94 and 11,483.70 is: 15,848.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.72 : 28,862.94 = 11,483.70 : x
  2. Step 2: Convert to fraction form
    20,913.72/28,862.94 = 11,483.70/x
  3. Step 3: Cross multiply
    20,913.72x = 28,862.94 × 11,483.70
  4. Step 4: Simplify right side
    20,913.72x = 331,453,344.08
  5. Step 5: Solve for x
    x = 331,453,344.08/20,913.72
  6. Step 6: Final answer
    x = 15,848.61

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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.