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Finding the Fourth Proportional to 17,558.40, 26,300.80 and 8,206.40

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Solution

The fourth proportional to 17,558.40, 26,300.80 and 8,206.40 is: 12,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,558.40 : 26,300.80 = 8,206.40 : x
  2. Step 2: Convert to fraction form
    17,558.40/26,300.80 = 8,206.40/x
  3. Step 3: Cross multiply
    17,558.40x = 26,300.80 × 8,206.40
  4. Step 4: Simplify right side
    17,558.40x = 215,834,885.12
  5. Step 5: Solve for x
    x = 215,834,885.12/17,558.40
  6. Step 6: Final answer
    x = 12,292.40

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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.