Home / 30,756.28-42,445.07-17,145.22

Finding the Fourth Proportional to 30,756.28, 42,445.07 and 17,145.22

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Solution

The fourth proportional to 30,756.28, 42,445.07 and 17,145.22 is: 23,661.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,756.28 : 42,445.07 = 17,145.22 : x
  2. Step 2: Convert to fraction form
    30,756.28/42,445.07 = 17,145.22/x
  3. Step 3: Cross multiply
    30,756.28x = 42,445.07 × 17,145.22
  4. Step 4: Simplify right side
    30,756.28x = 727,729,850.84
  5. Step 5: Solve for x
    x = 727,729,850.84/30,756.28
  6. Step 6: Final answer
    x = 23,661.18

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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.