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Finding the Fourth Proportional to 22,303.92, 30,779.84 and 13,351.80

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Solution

The fourth proportional to 22,303.92, 30,779.84 and 13,351.80 is: 18,425.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,303.92 : 30,779.84 = 13,351.80 : x
  2. Step 2: Convert to fraction form
    22,303.92/30,779.84 = 13,351.80/x
  3. Step 3: Cross multiply
    22,303.92x = 30,779.84 × 13,351.80
  4. Step 4: Simplify right side
    22,303.92x = 410,966,267.71
  5. Step 5: Solve for x
    x = 410,966,267.71/22,303.92
  6. Step 6: Final answer
    x = 18,425.74

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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.