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Finding the Fourth Proportional to 19,205.80, 28,808.66 and 7,510.82

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Solution

The fourth proportional to 19,205.80, 28,808.66 and 7,510.82 is: 11,266.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,205.80 : 28,808.66 = 7,510.82 : x
  2. Step 2: Convert to fraction form
    19,205.80/28,808.66 = 7,510.82/x
  3. Step 3: Cross multiply
    19,205.80x = 28,808.66 × 7,510.82
  4. Step 4: Simplify right side
    19,205.80x = 216,376,534.43
  5. Step 5: Solve for x
    x = 216,376,534.43/19,205.80
  6. Step 6: Final answer
    x = 11,266.21

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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.