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Finding the Fourth Proportional to 12,800.80, 19,192.95 and 8,840.92

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Solution

The fourth proportional to 12,800.80, 19,192.95 and 8,840.92 is: 13,255.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800.80 : 19,192.95 = 8,840.92 : x
  2. Step 2: Convert to fraction form
    12,800.80/19,192.95 = 8,840.92/x
  3. Step 3: Cross multiply
    12,800.80x = 19,192.95 × 8,840.92
  4. Step 4: Simplify right side
    12,800.80x = 169,683,335.51
  5. Step 5: Solve for x
    x = 169,683,335.51/12,800.80
  6. Step 6: Final answer
    x = 13,255.68

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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.