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Finding the Fourth Proportional to 17,619.80, 26,429.70 and 11,053.40

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Solution

The fourth proportional to 17,619.80, 26,429.70 and 11,053.40 is: 16,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,619.80 : 26,429.70 = 11,053.40 : x
  2. Step 2: Convert to fraction form
    17,619.80/26,429.70 = 11,053.40/x
  3. Step 3: Cross multiply
    17,619.80x = 26,429.70 × 11,053.40
  4. Step 4: Simplify right side
    17,619.80x = 292,138,045.98
  5. Step 5: Solve for x
    x = 292,138,045.98/17,619.80
  6. Step 6: Final answer
    x = 16,580.10

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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.