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Finding the Fourth Proportional to 21,759.10, 32,653.23 and 7,908.10

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Solution

The fourth proportional to 21,759.10, 32,653.23 and 7,908.10 is: 11,867.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.10 : 32,653.23 = 7,908.10 : x
  2. Step 2: Convert to fraction form
    21,759.10/32,653.23 = 7,908.10/x
  3. Step 3: Cross multiply
    21,759.10x = 32,653.23 × 7,908.10
  4. Step 4: Simplify right side
    21,759.10x = 258,225,008.16
  5. Step 5: Solve for x
    x = 258,225,008.16/21,759.10
  6. Step 6: Final answer
    x = 11,867.45

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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.