Home / 30,729.36-42,407.37-18,792.48

Finding the Fourth Proportional to 30,729.36, 42,407.37 and 18,792.48

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Solution

The fourth proportional to 30,729.36, 42,407.37 and 18,792.48 is: 25,934.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,729.36 : 42,407.37 = 18,792.48 : x
  2. Step 2: Convert to fraction form
    30,729.36/42,407.37 = 18,792.48/x
  3. Step 3: Cross multiply
    30,729.36x = 42,407.37 × 18,792.48
  4. Step 4: Simplify right side
    30,729.36x = 796,939,652.58
  5. Step 5: Solve for x
    x = 796,939,652.58/30,729.36
  6. Step 6: Final answer
    x = 25,934.14

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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.