Home / 30,315.12-45,474.12-9,540.24

Finding the Fourth Proportional to 30,315.12, 45,474.12 and 9,540.24

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Solution

The fourth proportional to 30,315.12, 45,474.12 and 9,540.24 is: 14,310.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,315.12 : 45,474.12 = 9,540.24 : x
  2. Step 2: Convert to fraction form
    30,315.12/45,474.12 = 9,540.24/x
  3. Step 3: Cross multiply
    30,315.12x = 45,474.12 × 9,540.24
  4. Step 4: Simplify right side
    30,315.12x = 433,834,018.59
  5. Step 5: Solve for x
    x = 433,834,018.59/30,315.12
  6. Step 6: Final answer
    x = 14,310.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.