Home / 30,649.61-42,297.56-17,220.60

Finding the Fourth Proportional to 30,649.61, 42,297.56 and 17,220.60

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Solution

The fourth proportional to 30,649.61, 42,297.56 and 17,220.60 is: 23,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,649.61 : 42,297.56 = 17,220.60 : x
  2. Step 2: Convert to fraction form
    30,649.61/42,297.56 = 17,220.60/x
  3. Step 3: Cross multiply
    30,649.61x = 42,297.56 × 17,220.60
  4. Step 4: Simplify right side
    30,649.61x = 728,389,275.63
  5. Step 5: Solve for x
    x = 728,389,275.63/30,649.61
  6. Step 6: Final answer
    x = 23,765.05

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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.