Home / 30,142.13-45,203.96-20,841.92

Finding the Fourth Proportional to 30,142.13, 45,203.96 and 20,841.92

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Solution

The fourth proportional to 30,142.13, 45,203.96 and 20,841.92 is: 31,256.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,142.13 : 45,203.96 = 20,841.92 : x
  2. Step 2: Convert to fraction form
    30,142.13/45,203.96 = 20,841.92/x
  3. Step 3: Cross multiply
    30,142.13x = 45,203.96 × 20,841.92
  4. Step 4: Simplify right side
    30,142.13x = 942,137,186.47
  5. Step 5: Solve for x
    x = 942,137,186.47/30,142.13
  6. Step 6: Final answer
    x = 31,256.49

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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.