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Finding the Fourth Proportional to 21,707.54, 32,564.93 and 6,920.99

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Solution

The fourth proportional to 21,707.54, 32,564.93 and 6,920.99 is: 10,382.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707.54 : 32,564.93 = 6,920.99 : x
  2. Step 2: Convert to fraction form
    21,707.54/32,564.93 = 6,920.99/x
  3. Step 3: Cross multiply
    21,707.54x = 32,564.93 × 6,920.99
  4. Step 4: Simplify right side
    21,707.54x = 225,381,554.88
  5. Step 5: Solve for x
    x = 225,381,554.88/21,707.54
  6. Step 6: Final answer
    x = 10,382.64

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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.