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Finding the Fourth Proportional to 21,870.03, 32,806.07 and 7,080.11

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Solution

The fourth proportional to 21,870.03, 32,806.07 and 7,080.11 is: 10,620.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,870.03 : 32,806.07 = 7,080.11 : x
  2. Step 2: Convert to fraction form
    21,870.03/32,806.07 = 7,080.11/x
  3. Step 3: Cross multiply
    21,870.03x = 32,806.07 × 7,080.11
  4. Step 4: Simplify right side
    21,870.03x = 232,270,584.27
  5. Step 5: Solve for x
    x = 232,270,584.27/21,870.03
  6. Step 6: Final answer
    x = 10,620.50

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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.