Home / 30,165.30-45,174.06-21,258.72

Finding the Fourth Proportional to 30,165.30, 45,174.06 and 21,258.72

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Solution

The fourth proportional to 30,165.30, 45,174.06 and 21,258.72 is: 31,836.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,165.30 : 45,174.06 = 21,258.72 : x
  2. Step 2: Convert to fraction form
    30,165.30/45,174.06 = 21,258.72/x
  3. Step 3: Cross multiply
    30,165.30x = 45,174.06 × 21,258.72
  4. Step 4: Simplify right side
    30,165.30x = 960,342,692.80
  5. Step 5: Solve for x
    x = 960,342,692.80/30,165.30
  6. Step 6: Final answer
    x = 31,836.01

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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.