Home / 12,800.57-19,209.50-4,480.66

Finding the Fourth Proportional to 12,800.57, 19,209.50 and 4,480.66

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Solution

The fourth proportional to 12,800.57, 19,209.50 and 4,480.66 is: 6,724.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800.57 : 19,209.50 = 4,480.66 : x
  2. Step 2: Convert to fraction form
    12,800.57/19,209.50 = 4,480.66/x
  3. Step 3: Cross multiply
    12,800.57x = 19,209.50 × 4,480.66
  4. Step 4: Simplify right side
    12,800.57x = 86,071,227.86
  5. Step 5: Solve for x
    x = 86,071,227.86/12,800.57
  6. Step 6: Final answer
    x = 6,724.01

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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.