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Finding the Fourth Proportional to 20,649.33, 30,966.45 and 8,804.31

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Solution

The fourth proportional to 20,649.33, 30,966.45 and 8,804.31 is: 13,203.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.33 : 30,966.45 = 8,804.31 : x
  2. Step 2: Convert to fraction form
    20,649.33/30,966.45 = 8,804.31/x
  3. Step 3: Cross multiply
    20,649.33x = 30,966.45 × 8,804.31
  4. Step 4: Simplify right side
    20,649.33x = 272,638,225.40
  5. Step 5: Solve for x
    x = 272,638,225.40/20,649.33
  6. Step 6: Final answer
    x = 13,203.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.