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Finding the Fourth Proportional to 19,817.56, 29,726.98 and 7,340.72

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Solution

The fourth proportional to 19,817.56, 29,726.98 and 7,340.72 is: 11,011.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,817.56 : 29,726.98 = 7,340.72 : x
  2. Step 2: Convert to fraction form
    19,817.56/29,726.98 = 7,340.72/x
  3. Step 3: Cross multiply
    19,817.56x = 29,726.98 × 7,340.72
  4. Step 4: Simplify right side
    19,817.56x = 218,217,436.63
  5. Step 5: Solve for x
    x = 218,217,436.63/19,817.56
  6. Step 6: Final answer
    x = 11,011.32

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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.