Home / 20,635.49-28,477.15-11,204.07

Finding the Fourth Proportional to 20,635.49, 28,477.15 and 11,204.07

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Solution

The fourth proportional to 20,635.49, 28,477.15 and 11,204.07 is: 15,461.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.49 : 28,477.15 = 11,204.07 : x
  2. Step 2: Convert to fraction form
    20,635.49/28,477.15 = 11,204.07/x
  3. Step 3: Cross multiply
    20,635.49x = 28,477.15 × 11,204.07
  4. Step 4: Simplify right side
    20,635.49x = 319,059,953.99
  5. Step 5: Solve for x
    x = 319,059,953.99/20,635.49
  6. Step 6: Final answer
    x = 15,461.71

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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.