Home / 20,634.49-28,475.60-11,203.05

Finding the Fourth Proportional to 20,634.49, 28,475.60 and 11,203.05

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Solution

The fourth proportional to 20,634.49, 28,475.60 and 11,203.05 is: 15,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.49 : 28,475.60 = 11,203.05 : x
  2. Step 2: Convert to fraction form
    20,634.49/28,475.60 = 11,203.05/x
  3. Step 3: Cross multiply
    20,634.49x = 28,475.60 × 11,203.05
  4. Step 4: Simplify right side
    20,634.49x = 319,013,663.36
  5. Step 5: Solve for x
    x = 319,013,663.36/20,634.49
  6. Step 6: Final answer
    x = 15,460.21

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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.