Home / 20,648.05-28,492.90-11,216.41

Finding the Fourth Proportional to 20,648.05, 28,492.90 and 11,216.41

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Solution

The fourth proportional to 20,648.05, 28,492.90 and 11,216.41 is: 15,477.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.05 : 28,492.90 = 11,216.41 : x
  2. Step 2: Convert to fraction form
    20,648.05/28,492.90 = 11,216.41/x
  3. Step 3: Cross multiply
    20,648.05x = 28,492.90 × 11,216.41
  4. Step 4: Simplify right side
    20,648.05x = 319,588,048.49
  5. Step 5: Solve for x
    x = 319,588,048.49/20,648.05
  6. Step 6: Final answer
    x = 15,477.88

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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.