Home / 12,690.28-19,043.31-6,117.13

Finding the Fourth Proportional to 12,690.28, 19,043.31 and 6,117.13

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Solution

The fourth proportional to 12,690.28, 19,043.31 and 6,117.13 is: 9,179.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.28 : 19,043.31 = 6,117.13 : x
  2. Step 2: Convert to fraction form
    12,690.28/19,043.31 = 6,117.13/x
  3. Step 3: Cross multiply
    12,690.28x = 19,043.31 × 6,117.13
  4. Step 4: Simplify right side
    12,690.28x = 116,490,402.90
  5. Step 5: Solve for x
    x = 116,490,402.90/12,690.28
  6. Step 6: Final answer
    x = 9,179.50

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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.