Home / 13,730.80-20,581.78-8,451.93

Finding the Fourth Proportional to 13,730.80, 20,581.78 and 8,451.93

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Solution

The fourth proportional to 13,730.80, 20,581.78 and 8,451.93 is: 12,669.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.80 : 20,581.78 = 8,451.93 : x
  2. Step 2: Convert to fraction form
    13,730.80/20,581.78 = 8,451.93/x
  3. Step 3: Cross multiply
    13,730.80x = 20,581.78 × 8,451.93
  4. Step 4: Simplify right side
    13,730.80x = 173,955,763.84
  5. Step 5: Solve for x
    x = 173,955,763.84/13,730.80
  6. Step 6: Final answer
    x = 12,669.02

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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.