Home / 30,113.52-45,174.54-12,579.36

Finding the Fourth Proportional to 30,113.52, 45,174.54 and 12,579.36

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Solution

The fourth proportional to 30,113.52, 45,174.54 and 12,579.36 is: 18,870.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,113.52 : 45,174.54 = 12,579.36 : x
  2. Step 2: Convert to fraction form
    30,113.52/45,174.54 = 12,579.36/x
  3. Step 3: Cross multiply
    30,113.52x = 45,174.54 × 12,579.36
  4. Step 4: Simplify right side
    30,113.52x = 568,266,801.49
  5. Step 5: Solve for x
    x = 568,266,801.49/30,113.52
  6. Step 6: Final answer
    x = 18,870.82

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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.