Home / 13,118.60-19,686.78-5,718.78

Finding the Fourth Proportional to 13,118.60, 19,686.78 and 5,718.78

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Solution

The fourth proportional to 13,118.60, 19,686.78 and 5,718.78 is: 8,582.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.60 : 19,686.78 = 5,718.78 : x
  2. Step 2: Convert to fraction form
    13,118.60/19,686.78 = 5,718.78/x
  3. Step 3: Cross multiply
    13,118.60x = 19,686.78 × 5,718.78
  4. Step 4: Simplify right side
    13,118.60x = 112,584,363.73
  5. Step 5: Solve for x
    x = 112,584,363.73/13,118.60
  6. Step 6: Final answer
    x = 8,582.04

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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.