Home / 30,174.72-45,267.08-12,645.84

Finding the Fourth Proportional to 30,174.72, 45,267.08 and 12,645.84

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Solution

The fourth proportional to 30,174.72, 45,267.08 and 12,645.84 is: 18,970.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,174.72 : 45,267.08 = 12,645.84 : x
  2. Step 2: Convert to fraction form
    30,174.72/45,267.08 = 12,645.84/x
  3. Step 3: Cross multiply
    30,174.72x = 45,267.08 × 12,645.84
  4. Step 4: Simplify right side
    30,174.72x = 572,440,250.95
  5. Step 5: Solve for x
    x = 572,440,250.95/30,174.72
  6. Step 6: Final answer
    x = 18,970.86

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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.