Home / 30,481.02-42,140.79-22,510.62

Finding the Fourth Proportional to 30,481.02, 42,140.79 and 22,510.62

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Solution

The fourth proportional to 30,481.02, 42,140.79 and 22,510.62 is: 31,121.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,481.02 : 42,140.79 = 22,510.62 : x
  2. Step 2: Convert to fraction form
    30,481.02/42,140.79 = 22,510.62/x
  3. Step 3: Cross multiply
    30,481.02x = 42,140.79 × 22,510.62
  4. Step 4: Simplify right side
    30,481.02x = 948,615,310.19
  5. Step 5: Solve for x
    x = 948,615,310.19/30,481.02
  6. Step 6: Final answer
    x = 31,121.51

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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.