Home / 30,209.72-45,314.61-11,485.36

Finding the Fourth Proportional to 30,209.72, 45,314.61 and 11,485.36

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Solution

The fourth proportional to 30,209.72, 45,314.61 and 11,485.36 is: 17,228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,209.72 : 45,314.61 = 11,485.36 : x
  2. Step 2: Convert to fraction form
    30,209.72/45,314.61 = 11,485.36/x
  3. Step 3: Cross multiply
    30,209.72x = 45,314.61 × 11,485.36
  4. Step 4: Simplify right side
    30,209.72x = 520,454,609.11
  5. Step 5: Solve for x
    x = 520,454,609.11/30,209.72
  6. Step 6: Final answer
    x = 17,228.05

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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.