Home / 30,901.32-42,629.47-18,150.43

Finding the Fourth Proportional to 30,901.32, 42,629.47 and 18,150.43

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Solution

The fourth proportional to 30,901.32, 42,629.47 and 18,150.43 is: 25,039.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,901.32 : 42,629.47 = 18,150.43 : x
  2. Step 2: Convert to fraction form
    30,901.32/42,629.47 = 18,150.43/x
  3. Step 3: Cross multiply
    30,901.32x = 42,629.47 × 18,150.43
  4. Step 4: Simplify right side
    30,901.32x = 773,743,211.17
  5. Step 5: Solve for x
    x = 773,743,211.17/30,901.32
  6. Step 6: Final answer
    x = 25,039.16

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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.