Home / 30,415.30-45,601.35-11,688.10

Finding the Fourth Proportional to 30,415.30, 45,601.35 and 11,688.10

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Solution

The fourth proportional to 30,415.30, 45,601.35 and 11,688.10 is: 17,523.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,415.30 : 45,601.35 = 11,688.10 : x
  2. Step 2: Convert to fraction form
    30,415.30/45,601.35 = 11,688.10/x
  3. Step 3: Cross multiply
    30,415.30x = 45,601.35 × 11,688.10
  4. Step 4: Simplify right side
    30,415.30x = 532,993,138.94
  5. Step 5: Solve for x
    x = 532,993,138.94/30,415.30
  6. Step 6: Final answer
    x = 17,523.85

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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.