Home / 30,756.96-42,442.36-18,179.28

Finding the Fourth Proportional to 30,756.96, 42,442.36 and 18,179.28

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Solution

The fourth proportional to 30,756.96, 42,442.36 and 18,179.28 is: 25,086.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,756.96 : 42,442.36 = 18,179.28 : x
  2. Step 2: Convert to fraction form
    30,756.96/42,442.36 = 18,179.28/x
  3. Step 3: Cross multiply
    30,756.96x = 42,442.36 × 18,179.28
  4. Step 4: Simplify right side
    30,756.96x = 771,571,546.30
  5. Step 5: Solve for x
    x = 771,571,546.30/30,756.96
  6. Step 6: Final answer
    x = 25,086.08

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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.