Home / 12,717.30-19,062.45-6,139.20

Finding the Fourth Proportional to 12,717.30, 19,062.45 and 6,139.20

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Solution

The fourth proportional to 12,717.30, 19,062.45 and 6,139.20 is: 9,202.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,717.30 : 19,062.45 = 6,139.20 : x
  2. Step 2: Convert to fraction form
    12,717.30/19,062.45 = 6,139.20/x
  3. Step 3: Cross multiply
    12,717.30x = 19,062.45 × 6,139.20
  4. Step 4: Simplify right side
    12,717.30x = 117,028,193.04
  5. Step 5: Solve for x
    x = 117,028,193.04/12,717.30
  6. Step 6: Final answer
    x = 9,202.28

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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.