Home / 30,764.16-42,459.84-18,191.52

Finding the Fourth Proportional to 30,764.16, 42,459.84 and 18,191.52

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Solution

The fourth proportional to 30,764.16, 42,459.84 and 18,191.52 is: 25,107.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,764.16 : 42,459.84 = 18,191.52 : x
  2. Step 2: Convert to fraction form
    30,764.16/42,459.84 = 18,191.52/x
  3. Step 3: Cross multiply
    30,764.16x = 42,459.84 × 18,191.52
  4. Step 4: Simplify right side
    30,764.16x = 772,409,028.56
  5. Step 5: Solve for x
    x = 772,409,028.56/30,764.16
  6. Step 6: Final answer
    x = 25,107.43

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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.