Home / 14,690.88-20,280.36-8,402.04

Finding the Fourth Proportional to 14,690.88, 20,280.36 and 8,402.04

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Solution

The fourth proportional to 14,690.88, 20,280.36 and 8,402.04 is: 11,598.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,690.88 : 20,280.36 = 8,402.04 : x
  2. Step 2: Convert to fraction form
    14,690.88/20,280.36 = 8,402.04/x
  3. Step 3: Cross multiply
    14,690.88x = 20,280.36 × 8,402.04
  4. Step 4: Simplify right side
    14,690.88x = 170,396,395.93
  5. Step 5: Solve for x
    x = 170,396,395.93/14,690.88
  6. Step 6: Final answer
    x = 11,598.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.