Home / 30,838.88-42,556.02-18,090.30

Finding the Fourth Proportional to 30,838.88, 42,556.02 and 18,090.30

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Solution

The fourth proportional to 30,838.88, 42,556.02 and 18,090.30 is: 24,963.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.88 : 42,556.02 = 18,090.30 : x
  2. Step 2: Convert to fraction form
    30,838.88/42,556.02 = 18,090.30/x
  3. Step 3: Cross multiply
    30,838.88x = 42,556.02 × 18,090.30
  4. Step 4: Simplify right side
    30,838.88x = 769,851,168.61
  5. Step 5: Solve for x
    x = 769,851,168.61/30,838.88
  6. Step 6: Final answer
    x = 24,963.66

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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.