Home / 12,765.40-19,154.81-6,109.43

Finding the Fourth Proportional to 12,765.40, 19,154.81 and 6,109.43

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Solution

The fourth proportional to 12,765.40, 19,154.81 and 6,109.43 is: 9,167.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.40 : 19,154.81 = 6,109.43 : x
  2. Step 2: Convert to fraction form
    12,765.40/19,154.81 = 6,109.43/x
  3. Step 3: Cross multiply
    12,765.40x = 19,154.81 × 6,109.43
  4. Step 4: Simplify right side
    12,765.40x = 117,024,890.36
  5. Step 5: Solve for x
    x = 117,024,890.36/12,765.40
  6. Step 6: Final answer
    x = 9,167.35

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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.