Home / 12,765.48-19,137.89-5,740.35

Finding the Fourth Proportional to 12,765.48, 19,137.89 and 5,740.35

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Solution

The fourth proportional to 12,765.48, 19,137.89 and 5,740.35 is: 8,605.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.48 : 19,137.89 = 5,740.35 : x
  2. Step 2: Convert to fraction form
    12,765.48/19,137.89 = 5,740.35/x
  3. Step 3: Cross multiply
    12,765.48x = 19,137.89 × 5,740.35
  4. Step 4: Simplify right side
    12,765.48x = 109,858,158.16
  5. Step 5: Solve for x
    x = 109,858,158.16/12,765.48
  6. Step 6: Final answer
    x = 8,605.88

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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.