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Finding the Fourth Proportional to 22,303.01, 30,778.11 and 12,871.58

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Solution

The fourth proportional to 22,303.01, 30,778.11 and 12,871.58 is: 17,762.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,303.01 : 30,778.11 = 12,871.58 : x
  2. Step 2: Convert to fraction form
    22,303.01/30,778.11 = 12,871.58/x
  3. Step 3: Cross multiply
    22,303.01x = 30,778.11 × 12,871.58
  4. Step 4: Simplify right side
    22,303.01x = 396,162,751.22
  5. Step 5: Solve for x
    x = 396,162,751.22/22,303.01
  6. Step 6: Final answer
    x = 17,762.75

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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.